725224753 has 24 divisors (see below), whose sum is σ = 854409024. Its totient is φ = 613499040.

The previous prime is 725224739. The next prime is 725224771. The reversal of 725224753 is 357422527.

It is a de Polignac number, because none of the positive numbers 2^k-725224753 is a prime.

It is a super-2 number, since 2×725224753² = 1051901884727822018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725224153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99450 + ... + 106492.

It is an arithmetic number, because the mean of its divisors is an integer number (35600376).

Almost surely, 2^725224753 is an apocalyptic number.

It is an amenable number.

725224753 is a deficient number, since it is larger than the sum of its proper divisors (129184271).

725224753 is a wasteful number, since it uses less digits than its factorization.

725224753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7125 (or 7114 counting only the distinct ones).

The product of its digits is 117600, while the sum is 37.

The square root of 725224753 is about 26929.9972707017. The cubic root of 725224753 is about 898.4437108116.

The spelling of 725224753 in words is "seven hundred twenty-five million, two hundred twenty-four thousand, seven hundred fifty-three".