125902539 has 32 divisors (see below), whose sum is σ = 214576640. Its totient is φ = 71469216.

The previous prime is 125902523. The next prime is 125902541. The reversal of 125902539 is 935209521.

It is a happy number.

125902539 is a `hidden beast` number, since 12 + 590 + 2 + 53 + 9 = 666.

It is not a de Polignac number, because 125902539 - 2⁴ = 125902523 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125902549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27552 + ... + 31794.

It is an arithmetic number, because the mean of its divisors is an integer number (6705520).

Almost surely, 2^125902539 is an apocalyptic number.

125902539 is a deficient number, since it is larger than the sum of its proper divisors (88674101).

125902539 is a wasteful number, since it uses less digits than its factorization.

125902539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416 (or 4410 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 125902539 is about 11220.6300625232. The cubic root of 125902539 is about 501.2005006230.

It can be divided in two parts, 12590 and 2539, that added together give a square (15129 = 123²).

The spelling of 125902539 in words is "one hundred twenty-five million, nine hundred two thousand, five hundred thirty-nine".