125504631 has 18 divisors (see below), whose sum is σ = 210882672. Its totient is φ = 71716680.

The previous prime is 125504609. The next prime is 125504651. The reversal of 125504631 is 136405521.

125504631 is a `hidden beast` number, since 1 + 25 + 5 + 0 + 4 + 631 = 666.

It is not a de Polignac number, because 125504631 - 2¹⁸ = 125242487 is a prime.

It is a super-2 number, since 2×125504631² = 31502824804892322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125504595 and 125504604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125504651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 141855 + ... + 142736.

It is an arithmetic number, because the mean of its divisors is an integer number (11715704).

Almost surely, 2^125504631 is an apocalyptic number.

125504631 is a deficient number, since it is larger than the sum of its proper divisors (85378041).

125504631 is a wasteful number, since it uses less digits than its factorization.

125504631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284611 (or 284601 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 125504631 is about 11202.8849409427. The cubic root of 125504631 is about 500.6719379277.

The spelling of 125504631 in words is "one hundred twenty-five million, five hundred four thousand, six hundred thirty-one".