722491725 has 24 divisors (see below), whose sum is σ = 1197548352. Its totient is φ = 384352000.

The previous prime is 722491717. The next prime is 722491841. The reversal of 722491725 is 527194227.

It is not a de Polignac number, because 722491725 - 2³ = 722491717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18064 + ... + 42086.

It is an arithmetic number, because the mean of its divisors is an integer number (49897848).

Almost surely, 2^722491725 is an apocalyptic number.

722491725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

722491725 is a deficient number, since it is larger than the sum of its proper divisors (475056627).

722491725 is a wasteful number, since it uses less digits than its factorization.

722491725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24437 (or 24432 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 722491725 is about 26879.2061824750. The cubic root of 722491725 is about 897.3136874247.

The spelling of 722491725 in words is "seven hundred twenty-two million, four hundred ninety-one thousand, seven hundred twenty-five".