7921875252 has 48 divisors (see below), whose sum is σ = 18678240000. Its totient is φ = 2613064320.

The previous prime is 7921875217. The next prime is 7921875263. The reversal of 7921875252 is 2525781297.

It is a super-2 number, since 2×7921875252² (a number of 21 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, 476374 + ... + 492722.

It is an arithmetic number, because the mean of its divisors is an integer number (389130000).

Almost surely, 2^7921875252 is an apocalyptic number.

It is an amenable number.

7921875252 is an abundant number, since it is smaller than the sum of its proper divisors (10756364748).

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

7921875252 is a wasteful number, since it uses less digits than its factorization.

7921875252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16776 (or 16774 counting only the distinct ones).

The product of its digits is 705600, while the sum is 48.

The square root of 7921875252 is about 89004.9170102416. The cubic root of 7921875252 is about 1993.4682959765.

The spelling of 7921875252 in words is "seven billion, nine hundred twenty-one million, eight hundred seventy-five thousand, two hundred fifty-two".