722510725 has 12 divisors (see below), whose sum is σ = 916749856. Its totient is φ = 564565680.

The previous prime is 722510717. The next prime is 722510749. The reversal of 722510725 is 527015227.

It is not a de Polignac number, because 722510725 - 2³ = 722510717 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334977 + ... + 337126.

Almost surely, 2^722510725 is an apocalyptic number.

It is an amenable number.

722510725 is a deficient number, since it is larger than the sum of its proper divisors (194239131).

722510725 is a wasteful number, since it uses less digits than its factorization.

722510725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672156 (or 672151 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 722510725 is about 26879.5596132080. The cubic root of 722510725 is about 897.3215531713.

The spelling of 722510725 in words is "seven hundred twenty-two million, five hundred ten thousand, seven hundred twenty-five".