125561504 has 24 divisors (see below), whose sum is σ = 249516288. Its totient is φ = 62192320.

The previous prime is 125561479. The next prime is 125561509. The reversal of 125561504 is 405165521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (125561509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14912 + ... + 21759.

It is an arithmetic number, because the mean of its divisors is an integer number (10396512).

Almost surely, 2^125561504 is an apocalyptic number.

It is an amenable number.

125561504 is a deficient number, since it is larger than the sum of its proper divisors (123954784).

125561504 is a wasteful number, since it uses less digits than its factorization.

125561504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36788 (or 36780 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 125561504 is about 11205.4229728288. The cubic root of 125561504 is about 500.7475537697.

The spelling of 125561504 in words is "one hundred twenty-five million, five hundred sixty-one thousand, five hundred four".