25287136466 has 16 divisors (see below), whose sum is σ = 38867834880. Its totient is φ = 12331381920.

The previous prime is 25287136453. The next prime is 25287136471. The reversal of 25287136466 is 66463178252.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229535 + ... + 321341.

It is an arithmetic number, because the mean of its divisors is an integer number (2429239680).

Almost surely, 2^25287136466 is an apocalyptic number.

25287136466 is a deficient number, since it is larger than the sum of its proper divisors (13580698414).

25287136466 is a wasteful number, since it uses less digits than its factorization.

25287136466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95209.

The product of its digits is 2903040, while the sum is 50.

The spelling of 25287136466 in words is "twenty-five billion, two hundred eighty-seven million, one hundred thirty-six thousand, four hundred sixty-six".