25212255020 has 24 divisors (see below), whose sum is σ = 52959130224. Its totient is φ = 10082350656.

The previous prime is 25212255001. The next prime is 25212255031. The reversal of 25212255020 is 2055221252.

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, 77399 + ... + 237518.

It is an arithmetic number, because the mean of its divisors is an integer number (2206630426).

Almost surely, 2^25212255020 is an apocalyptic number.

25212255020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25212255020 is an abundant number, since it is smaller than the sum of its proper divisors (27746875204).

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

25212255020 is a wasteful number, since it uses less digits than its factorization.

25212255020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318929 (or 318927 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 25212255020 its reverse (2055221252), we get a palindrome (27267476272).

The spelling of 25212255020 in words is "twenty-five billion, two hundred twelve million, two hundred fifty-five thousand, twenty".