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12899925 = 335229659
BaseRepresentation
bin110001001101…
…011001010101
3220021101101000
4301031121111
511300244200
61140253513
7214435053
oct61153125
926241330
1012899925
1173109a5
1243a1299
1328987bc
1419db1d3
1511ec300
hexc4d655

12899925 has 48 divisors (see below), whose sum is σ = 24552000. Its totient is φ = 6632640.

The previous prime is 12899899. The next prime is 12899951. The reversal of 12899925 is 52999821.

12899925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12899899) and next prime (12899951).

It is not a de Polignac number, because 12899925 - 25 = 12899893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19246 + ... + 19904.

It is an arithmetic number, because the mean of its divisors is an integer number (511500).

Almost surely, 212899925 is an apocalyptic number.

12899925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12899925 is a deficient number, since it is larger than the sum of its proper divisors (11652075).

12899925 is a wasteful number, since it uses less digits than its factorization.

12899925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 696 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 12899925 is about 3591.6465583350. The cubic root of 12899925 is about 234.5285553732.

It can be divided in two parts, 12899 and 925, that added together give a cube (13824 = 243).

The spelling of 12899925 in words is "twelve million, eight hundred ninety-nine thousand, nine hundred twenty-five".

Divisors: 1 3 5 9 15 25 27 29 45 75 87 135 145 225 261 435 659 675 725 783 1305 1977 2175 3295 3915 5931 6525 9885 16475 17793 19111 19575 29655 49425 57333 88965 95555 148275 171999 286665 444825 477775 515997 859995 1433325 2579985 4299975 12899925