13625397504 has 90 divisors (see below), whose sum is σ = 40628531790. Its totient is φ = 4541792256.

The previous prime is 13625397491. The next prime is 13625397521. The reversal of 13625397504 is 40579352631.

13625397504 is a `hidden beast` number, since 1 + 3 + 6 + 2 + 53 + 97 + 504 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13537787904 + 87609600 = 116352^2 + 9360^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13625397504.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 307809 + ... + 349280.

It is an arithmetic number, because the mean of its divisors is an integer number (451428131).

Almost surely, 2^13625397504 is an apocalyptic number.

It is an amenable number.

13625397504 is an abundant number, since it is smaller than the sum of its proper divisors (27003134286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13625397504 is an frugal number, since it uses more digits than its factorization.

13625397504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657117 (or 657094 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 13625397504 in words is "thirteen billion, six hundred twenty-five million, three hundred ninety-seven thousand, five hundred four".