25440453360 has 120 divisors (see below), whose sum is σ = 97642902240. Its totient is φ = 5814959616.

The previous prime is 25440453349. The next prime is 25440453391. The reversal of 25440453360 is 6335404452.

25440453360 is a `hidden beast` number, since 2 + 544 + 0 + 4 + 53 + 3 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2518815 + ... + 2528894.

It is an arithmetic number, because the mean of its divisors is an integer number (813690852).

Almost surely, 2^25440453360 is an apocalyptic number.

25440453360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25440453360 is an abundant number, since it is smaller than the sum of its proper divisors (72202448880).

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

25440453360 is a wasteful number, since it uses less digits than its factorization.

25440453360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047735 (or 5047726 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The spelling of 25440453360 in words is "twenty-five billion, four hundred forty million, four hundred fifty-three thousand, three hundred sixty".