25212021252 has 36 divisors (see below), whose sum is σ = 64662240048. Its totient is φ = 7640006000.

The previous prime is 25212021209. The next prime is 25212021277.

25212021252 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×25212021252² (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 11 ways as a sum of consecutive naturals, for example, 8680374 + ... + 8683277.

Almost surely, 2^25212021252 is an apocalyptic number.

25212021252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25212021252 is an abundant number, since it is smaller than the sum of its proper divisors (39450218796).

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

25212021252 is a wasteful number, since it uses less digits than its factorization.

25212021252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17363680 (or 17363667 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

It can be divided in two parts, 252120 and 21252, that added together give a palindrome (273372).

The spelling of 25212021252 in words is "twenty-five billion, two hundred twelve million, twenty-one thousand, two hundred fifty-two".