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125160381 = 3237375857
BaseRepresentation
bin1110111010111…
…00101110111101
322201111210202200
413131130232331
5224020113011
620230342113
73046563033
oct735345675
9281453680
10125160381
1164716935
1235aba939
131cc129c8
14128a0553
15aec4856
hex775cbbd

125160381 has 12 divisors (see below), whose sum is σ = 185673852. Its totient is φ = 81184896.

The previous prime is 125160379. The next prime is 125160383. The reversal of 125160381 is 183061521.

125160381 is a `hidden beast` number, since 1 + 2 + 51 + 603 + 8 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (125160379) and next prime (125160383).

It can be written as a sum of positive squares in 2 ways, for example, as 42968025 + 82192356 = 6555^2 + 9066^2 .

It is not a de Polignac number, because 125160381 - 21 = 125160379 is a prime.

It is a super-2 number, since 2×1251603812 = 31330241944130322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125160383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187596 + ... + 188261.

It is an arithmetic number, because the mean of its divisors is an integer number (15472821).

Almost surely, 2125160381 is an apocalyptic number.

It is an amenable number.

125160381 is a deficient number, since it is larger than the sum of its proper divisors (60513471).

125160381 is a wasteful number, since it uses less digits than its factorization.

125160381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375900 (or 375897 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 125160381 is about 11187.5100446882. The cubic root of 125160381 is about 500.2137499422.

The spelling of 125160381 in words is "one hundred twenty-five million, one hundred sixty thousand, three hundred eighty-one".

Divisors: 1 3 9 37 111 333 375857 1127571 3382713 13906709 41720127 125160381