25273644452 has 24 divisors (see below), whose sum is σ = 51622765824. Its totient is φ = 10601102592.

The previous prime is 25273644419. The next prime is 25273644463. The reversal of 25273644452 is 25444637252.

It is a super-2 number, since 2×25273644452² (a number of 22 digits) contains 22 as substring.

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, 9601133 + ... + 9603764.

It is an arithmetic number, because the mean of its divisors is an integer number (2150948576).

Almost surely, 2^25273644452 is an apocalyptic number.

It is an amenable number.

25273644452 is an abundant number, since it is smaller than the sum of its proper divisors (26349121372).

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

25273644452 is a wasteful number, since it uses less digits than its factorization.

25273644452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19204955 (or 19204953 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 44.

Adding to 25273644452 its product of digits (1612800), we get a palindrome (25275257252).

The spelling of 25273644452 in words is "twenty-five billion, two hundred seventy-three million, six hundred forty-four thousand, four hundred fifty-two".