25209504315 has 64 divisors (see below), whose sum is σ = 46826035200. Its totient is φ = 12843844992.

The previous prime is 25209504301. The next prime is 25209504371. The reversal of 25209504315 is 51340590252.

It is a happy number.

25209504315 is a `hidden beast` number, since 2 + 520 + 95 + 0 + 43 + 1 + 5 = 666.

It is not a de Polignac number, because 25209504315 - 2⁵ = 25209504283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25209504315.

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 63 ways as a sum of consecutive naturals, for example, 2600257 + ... + 2609933.

It is an arithmetic number, because the mean of its divisors is an integer number (731656800).

Almost surely, 2^25209504315 is an apocalyptic number.

25209504315 is a deficient number, since it is larger than the sum of its proper divisors (21616530885).

25209504315 is a wasteful number, since it uses less digits than its factorization.

25209504315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10553 (or 10547 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 25209504315 in words is "twenty-five billion, two hundred nine million, five hundred four thousand, three hundred fifteen".