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125212080 = 2435774531
BaseRepresentation
bin1110111011010…
…01010110110000
322201121102200110
413131221112300
5224023241310
620231421320
73050166540
oct735512660
9281542613
10125212080
1164751764
1235b24840
131cc303b6
14128b5320
15aed4d20
hex77695b0

125212080 has 80 divisors (see below), whose sum is σ = 443614464. Its totient is φ = 28619520.

The previous prime is 125212067. The next prime is 125212093. The reversal of 125212080 is 80212521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125212067) and next prime (125212093).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35586 + ... + 38945.

Almost surely, 2125212080 is an apocalyptic number.

125212080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125212080 is an abundant number, since it is smaller than the sum of its proper divisors (318402384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125212080 is a wasteful number, since it uses less digits than its factorization.

125212080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74554 (or 74548 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 125212080 is about 11189.8203738934. The cubic root of 125212080 is about 500.2826135624.

The spelling of 125212080 in words is "one hundred twenty-five million, two hundred twelve thousand, eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 168 210 240 280 336 420 560 840 1680 74531 149062 223593 298124 372655 447186 521717 596248 745310 894372 1043434 1117965 1192496 1490620 1565151 1788744 2086868 2235930 2608585 2981240 3130302 3577488 4173736 4471860 5217170 5962480 6260604 7825755 8347472 8943720 10434340 12521208 15651510 17887440 20868680 25042416 31303020 41737360 62606040 125212080