431423525 has 24 divisors (see below), whose sum is σ = 590186184. Its totient is φ = 310809600.

The previous prime is 431423521. The next prime is 431423563. The reversal of 431423525 is 525324134.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 279591841 + 151831684 = 16721^2 + 12322^2 .

It is not a de Polignac number, because 431423525 - 2² = 431423521 is a prime.

It is a super-2 number, since 2×431423525² = 372252515846851250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431423521) 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, 2864 + ... + 29513.

It is an arithmetic number, because the mean of its divisors is an integer number (24591091).

Almost surely, 2^431423525 is an apocalyptic number.

It is an amenable number.

431423525 is a deficient number, since it is larger than the sum of its proper divisors (158762659).

431423525 is a wasteful number, since it uses less digits than its factorization.

431423525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32441 (or 32436 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 431423525 is about 20770.7372281294. The cubic root of 431423525 is about 755.6162242430.

Adding to 431423525 its reverse (525324134), we get a palindrome (956747659).

The spelling of 431423525 in words is "four hundred thirty-one million, four hundred twenty-three thousand, five hundred twenty-five".