25284840264 has 48 divisors (see below), whose sum is σ = 68524173900. Its totient is φ = 8422815744.

The previous prime is 25284840239. The next prime is 25284840277. The reversal of 25284840264 is 46204848252.

It can be written as a sum of positive squares in 2 ways, for example, as 22693012164 + 2591828100 = 150642^2 + 50910^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1249 + ... + 224880.

Almost surely, 2^25284840264 is an apocalyptic number.

25284840264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25284840264 is an abundant number, since it is smaller than the sum of its proper divisors (43239333636).

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

25284840264 is a wasteful number, since it uses less digits than its factorization.

25284840264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227694 (or 227687 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 45.

The spelling of 25284840264 in words is "twenty-five billion, two hundred eighty-four million, eight hundred forty thousand, two hundred sixty-four".