7915725972 has 432 divisors, whose sum is σ = 27292749120. Its totient is φ = 1981324800.

The previous prime is 7915725971. The next prime is 7915725989. The reversal of 7915725972 is 2795275197.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7915725971) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 15193072 + ... + 15193592.

It is an arithmetic number, because the mean of its divisors is an integer number (63177660).

Almost surely, 2^7915725972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7915725972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13646374560).

7915725972 is an abundant number, since it is smaller than the sum of its proper divisors (19377023148).

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

7915725972 is a wasteful number, since it uses less digits than its factorization.

7915725972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 573 counting only the distinct ones).

The product of its digits is 2778300, while the sum is 54.

The square root of 7915725972 is about 88970.3656955506. The cubic root of 7915725972 is about 1992.9523588816.

The spelling of 7915725972 in words is "seven billion, nine hundred fifteen million, seven hundred twenty-five thousand, nine hundred seventy-two".