725139753 has 16 divisors (see below), whose sum is σ = 1045388736. Its totient is φ = 444456000.

The previous prime is 725139703. The next prime is 725139781. The reversal of 725139753 is 357931527.

It is not a de Polignac number, because 725139753 - 2⁶ = 725139689 is a prime.

It is a super-2 number, since 2×725139753² = 1051655322761802018, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (725139703) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27250 + ... + 46827.

It is an arithmetic number, because the mean of its divisors is an integer number (65336796).

Almost surely, 2^725139753 is an apocalyptic number.

It is an amenable number.

725139753 is a deficient number, since it is larger than the sum of its proper divisors (320248983).

725139753 is a wasteful number, since it uses less digits than its factorization.

725139753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74344.

The product of its digits is 198450, while the sum is 42.

The square root of 725139753 is about 26928.4190586822. The cubic root of 725139753 is about 898.4086087282.

The spelling of 725139753 in words is "seven hundred twenty-five million, one hundred thirty-nine thousand, seven hundred fifty-three".