125409537 has 12 divisors (see below), whose sum is σ = 197615184. Its totient is φ = 76005720.

The previous prime is 125409533. The next prime is 125409541. The reversal of 125409537 is 735904521.

It is an interprime number because it is at equal distance from previous prime (125409533) and next prime (125409541).

It is not a de Polignac number, because 125409537 - 2² = 125409533 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 not an unprimeable number, because it can be changed into a prime (125409533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 633283 + ... + 633480.

It is an arithmetic number, because the mean of its divisors is an integer number (16467932).

Almost surely, 2^125409537 is an apocalyptic number.

It is an amenable number.

125409537 is a deficient number, since it is larger than the sum of its proper divisors (72205647).

125409537 is a wasteful number, since it uses less digits than its factorization.

125409537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266780 (or 1266777 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 125409537 is about 11198.6399620668. The cubic root of 125409537 is about 500.5454540767.

The spelling of 125409537 in words is "one hundred twenty-five million, four hundred nine thousand, five hundred thirty-seven".