623431525 has 6 divisors (see below), whose sum is σ = 773055122. Its totient is φ = 498745200.

The previous prime is 623431493. The next prime is 623431559. The reversal of 623431525 is 525134326.

It is a happy number.

623431525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 69205761 + 554225764 = 8319^2 + 23542^2 .

It is not a de Polignac number, because 623431525 - 2⁵ = 623431493 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 12468606 + ... + 12468655.

Almost surely, 2^623431525 is an apocalyptic number.

It is an amenable number.

623431525 is a deficient number, since it is larger than the sum of its proper divisors (149623597).

623431525 is a wasteful number, since it uses less digits than its factorization.

623431525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24937271 (or 24937266 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 623431525 is about 24968.6107943554. The cubic root of 623431525 is about 854.2721596721.

The spelling of 623431525 in words is "six hundred twenty-three million, four hundred thirty-one thousand, five hundred twenty-five".