25438942020212 has 48 divisors (see below), whose sum is σ = 50945292359808. Its totient is φ = 10887964444800.

The previous prime is 25438942020181. The next prime is 25438942020229. The reversal of 25438942020212 is 21202024983452.

It is a super-2 number, since 2×25438942020212² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116636462 + ... + 116854362.

It is an arithmetic number, because the mean of its divisors is an integer number (1061360257496).

Almost surely, 2^{25438942020212} is an apocalyptic number.

It is an amenable number.

25438942020212 is an abundant number, since it is smaller than the sum of its proper divisors (25506350339596).

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

25438942020212 is a wasteful number, since it uses less digits than its factorization.

25438942020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223416 (or 223414 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 25438942020212 in words is "twenty-five trillion, four hundred thirty-eight billion, nine hundred forty-two million, twenty thousand, two hundred twelve".