125640475 has 12 divisors (see below), whose sum is σ = 158735376. Its totient is φ = 98614880.

The previous prime is 125640461. The next prime is 125640481. The reversal of 125640475 is 574046521.

It is not a de Polignac number, because 125640475 - 2⁵ = 125640443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125640475.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46087 + ... + 48736.

It is an arithmetic number, because the mean of its divisors is an integer number (13227948).

Almost surely, 2^125640475 is an apocalyptic number.

125640475 is a deficient number, since it is larger than the sum of its proper divisors (33094901).

125640475 is an equidigital number, since it uses as much as digits as its factorization.

125640475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94886 (or 94881 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 125640475 is about 11208.9462038142. The cubic root of 125640475 is about 500.8525122862.

Adding to 125640475 its reverse (574046521), we get a palindrome (699686996).

The spelling of 125640475 in words is "one hundred twenty-five million, six hundred forty thousand, four hundred seventy-five".