25252784008138 has 16 divisors (see below), whose sum is σ = 37899704957184. Its totient is φ = 12619550572720.

The previous prime is 25252784008091. The next prime is 25252784008169. The reversal of 25252784008138 is 83180048725252.

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, 32573331 + ... + 33339577.

It is an arithmetic number, because the mean of its divisors is an integer number (2368731559824).

Almost surely, 2^{25252784008138} is an apocalyptic number.

25252784008138 is a deficient number, since it is larger than the sum of its proper divisors (12646920949046).

25252784008138 is a wasteful number, since it uses less digits than its factorization.

25252784008138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775157.

The product of its (nonzero) digits is 8601600, while the sum is 55.

The spelling of 25252784008138 in words is "twenty-five trillion, two hundred fifty-two billion, seven hundred eighty-four million, eight thousand, one hundred thirty-eight".