125402634664 has 16 divisors (see below), whose sum is σ = 235134890100. Its totient is φ = 62699997312.

The previous prime is 125402634641. The next prime is 125402634667. The reversal of 125402634664 is 466436204521.

It can be written as a sum of positive squares in 2 ways, for example, as 105597701764 + 19804932900 = 324958^2 + 140730^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 125402634664.

It is not an unprimeable number, because it can be changed into a prime (125402634667) 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 3 ways as a sum of consecutive naturals, for example, 323994 + ... + 596470.

Almost surely, 2^125402634664 is an apocalyptic number.

It is an amenable number.

125402634664 is a deficient number, since it is larger than the sum of its proper divisors (109732255436).

125402634664 is a wasteful number, since it uses less digits than its factorization.

125402634664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330012 (or 330008 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 125402634664 in words is "one hundred twenty-five billion, four hundred two million, six hundred thirty-four thousand, six hundred sixty-four".