423642525 has 36 divisors (see below), whose sum is σ = 739274112. Its totient is φ = 214037280.

The previous prime is 423642511. The next prime is 423642539. The reversal of 423642525 is 525246324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (423642511) and next prime (423642539).

It is not a de Polignac number, because 423642525 - 2⁸ = 423642269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19252 + ... + 34898.

It is an arithmetic number, because the mean of its divisors is an integer number (20535392).

Almost surely, 2^423642525 is an apocalyptic number.

It is an amenable number.

423642525 is a deficient number, since it is larger than the sum of its proper divisors (315631587).

423642525 is a wasteful number, since it uses less digits than its factorization.

423642525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15698 (or 15674 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The square root of 423642525 is about 20582.5781912762. The cubic root of 423642525 is about 751.0459628265.

Adding to 423642525 its reverse (525246324), we get a palindrome (948888849).

The spelling of 423642525 in words is "four hundred twenty-three million, six hundred forty-two thousand, five hundred twenty-five".