25156224460 has 12 divisors (see below), whose sum is σ = 52828071408. Its totient is φ = 10062489776.

The previous prime is 25156224449. The next prime is 25156224469. The reversal of 25156224460 is 6442265152.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25156224469) 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, 628905592 + ... + 628905631.

It is an arithmetic number, because the mean of its divisors is an integer number (4402339284).

Almost surely, 2^25156224460 is an apocalyptic number.

25156224460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25156224460 is an abundant number, since it is smaller than the sum of its proper divisors (27671846948).

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

25156224460 is a wasteful number, since it uses less digits than its factorization.

25156224460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257811232 (or 1257811230 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 25156224460 in words is "twenty-five billion, one hundred fifty-six million, two hundred twenty-four thousand, four hundred sixty".