725322623 has 4 divisors (see below), whose sum is σ = 725665440. Its totient is φ = 724979808.

The previous prime is 725322589. The next prime is 725322679. The reversal of 725322623 is 326223527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725322623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 725322623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725327623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168215 + ... + 172472.

It is an arithmetic number, because the mean of its divisors is an integer number (181416360).

Almost surely, 2^725322623 is an apocalyptic number.

725322623 is a deficient number, since it is larger than the sum of its proper divisors (342817).

725322623 is a wasteful number, since it uses less digits than its factorization.

725322623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342816.

The product of its digits is 30240, while the sum is 32.

The square root of 725322623 is about 26931.8143280396. The cubic root of 725322623 is about 898.4841243663.

The spelling of 725322623 in words is "seven hundred twenty-five million, three hundred twenty-two thousand, six hundred twenty-three".