722715825 has 72 divisors (see below), whose sum is σ = 1362427680. Its totient is φ = 336960000.

The previous prime is 722715811. The next prime is 722715853. The reversal of 722715825 is 528517227.

It is not a de Polignac number, because 722715825 - 2⁴ = 722715809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 239325 + ... + 242325.

Almost surely, 2^722715825 is an apocalyptic number.

722715825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

722715825 is a deficient number, since it is larger than the sum of its proper divisors (639711855).

722715825 is a wasteful number, since it uses less digits than its factorization.

722715825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059 (or 3041 counting only the distinct ones).

The product of its digits is 78400, while the sum is 39.

The square root of 722715825 is about 26883.3745091646. The cubic root of 722715825 is about 897.4064530592.

The spelling of 722715825 in words is "seven hundred twenty-two million, seven hundred fifteen thousand, eight hundred twenty-five".