3972257500 has 30 divisors (see below), whose sum is σ = 8686538168. Its totient is φ = 1588902000.

The previous prime is 3972257467. The next prime is 3972257501. The reversal of 3972257500 is 57522793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3972257501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 791952 + ... + 796951.

Almost surely, 2^3972257500 is an apocalyptic number.

It is an amenable number.

3972257500 is an abundant number, since it is smaller than the sum of its proper divisors (4714280668).

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

3972257500 is a wasteful number, since it uses less digits than its factorization.

3972257500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588927 (or 1588910 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 3972257500 is about 63025.8478721231. The cubic root of 3972257500 is about 1583.7226620310.

The spelling of 3972257500 in words is "three billion, nine hundred seventy-two million, two hundred fifty-seven thousand, five hundred".