25690274884 has 12 divisors (see below), whose sum is σ = 44967347964. Its totient is φ = 12842461184.

The previous prime is 25690274881. The next prime is 25690274893. The reversal of 25690274884 is 48847209652.

It can be written as a sum of positive squares in 2 ways, for example, as 2837905984 + 22852368900 = 53272^2 + 151170^2 .

It is not an unprimeable number, because it can be changed into a prime (25690274881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647389 + ... + 685924.

It is an arithmetic number, because the mean of its divisors is an integer number (3747278997).

Almost surely, 2^25690274884 is an apocalyptic number.

It is an amenable number.

25690274884 is a deficient number, since it is larger than the sum of its proper divisors (19277073080).

25690274884 is a wasteful number, since it uses less digits than its factorization.

25690274884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338134 (or 1338132 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 25690274884 in words is "twenty-five billion, six hundred ninety million, two hundred seventy-four thousand, eight hundred eighty-four".