25252274450 has 24 divisors (see below), whose sum is σ = 50582249508. Its totient is φ = 9323916480.

The previous prime is 25252274449. The next prime is 25252274459. The reversal of 25252274450 is 5447225252.

It can be written as a sum of positive squares in 6 ways, for example, as 4082315449 + 21169959001 = 63893^2 + 145499^2 .

It is not an unprimeable number, because it can be changed into a prime (25252274459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19424177 + ... + 19425476.

Almost surely, 2^25252274450 is an apocalyptic number.

25252274450 is an abundant number, since it is smaller than the sum of its proper divisors (25329975058).

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

25252274450 is a wasteful number, since it uses less digits than its factorization.

25252274450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38849678 (or 38849673 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 38.

The spelling of 25252274450 in words is "twenty-five billion, two hundred fifty-two million, two hundred seventy-four thousand, four hundred fifty".