642431503025 has 48 divisors (see below), whose sum is σ = 865155126528. Its totient is φ = 470401152000.

The previous prime is 642431503019. The next prime is 642431503027. The reversal of 642431503025 is 520305134246.

It is not a de Polignac number, because 642431503025 - 2²⁸ = 642163067569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642431503027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57939032 + ... + 57950118.

It is an arithmetic number, because the mean of its divisors is an integer number (18024065136).

Almost surely, 2^642431503025 is an apocalyptic number.

642431503025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

642431503025 is a deficient number, since it is larger than the sum of its proper divisors (222723623503).

642431503025 is a wasteful number, since it uses less digits than its factorization.

642431503025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12602 (or 12597 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 642431503025 in words is "six hundred forty-two billion, four hundred thirty-one million, five hundred three thousand, twenty-five".