125404164265 has 16 divisors (see below), whose sum is σ = 159422875920. Its totient is φ = 94371102720.

The previous prime is 125404164257. The next prime is 125404164311. The reversal of 125404164265 is 562461404521.

It can be written as a sum of positive squares in 8 ways, for example, as 50637456 + 125353526809 = 7116^2 + 354053^2 .

It is not a de Polignac number, because 125404164265 - 2³ = 125404164257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238200 + ... + 554569.

It is an arithmetic number, because the mean of its divisors is an integer number (9963929745).

Almost surely, 2^125404164265 is an apocalyptic number.

It is an amenable number.

125404164265 is a deficient number, since it is larger than the sum of its proper divisors (34018711655).

125404164265 is a wasteful number, since it uses less digits than its factorization.

125404164265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794652.

The product of its (nonzero) digits is 230400, while the sum is 40.

Adding to 125404164265 its reverse (562461404521), we get a palindrome (687865568786).

The spelling of 125404164265 in words is "one hundred twenty-five billion, four hundred four million, one hundred sixty-four thousand, two hundred sixty-five".