125899892 has 12 divisors (see below), whose sum is σ = 233285220. Its totient is φ = 59246976.

The previous prime is 125899859. The next prime is 125899903. The reversal of 125899892 is 298998521.

It can be written as a sum of positive squares in 2 ways, for example, as 53377636 + 72522256 = 7306^2 + 8516^2 .

It is a super-2 number, since 2×125899892² = 31701565611223328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925667 + ... + 925802.

It is an arithmetic number, because the mean of its divisors is an integer number (19440435).

Almost surely, 2^125899892 is an apocalyptic number.

It is an amenable number.

125899892 is a deficient number, since it is larger than the sum of its proper divisors (107385328).

125899892 is a wasteful number, since it uses less digits than its factorization.

125899892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851490 (or 1851488 counting only the distinct ones).

The product of its digits is 933120, while the sum is 53.

The square root of 125899892 is about 11220.5121095251. The cubic root of 125899892 is about 501.1969881520.

The spelling of 125899892 in words is "one hundred twenty-five million, eight hundred ninety-nine thousand, eight hundred ninety-two".