42531344313525 has 48 divisors (see below), whose sum is σ = 82243847118400. Its totient is φ = 21489521330880.

The previous prime is 42531344313511. The next prime is 42531344313527. The reversal of 42531344313525 is 52531344313524.

42531344313525 is a `hidden beast` number, since 4 + 2 + 53 + 1 + 3 + 44 + 31 + 3 + 525 = 666.

It is not a de Polignac number, because 42531344313525 - 2²⁷ = 42531210095797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42531344313527) 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, 1658129254 + ... + 1658154903.

Almost surely, 2^{42531344313525} is an apocalyptic number.

42531344313525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42531344313525 is a deficient number, since it is larger than the sum of its proper divisors (39712502804875).

42531344313525 is a wasteful number, since it uses less digits than its factorization.

42531344313525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316284195 (or 3316284184 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 45.

Subtracting 42531344313525 from its reverse (52531344313524), we obtain a palindrome (9999999999999).

The spelling of 42531344313525 in words is "forty-two trillion, five hundred thirty-one billion, three hundred forty-four million, three hundred thirteen thousand, five hundred twenty-five".