42520332425 has 12 divisors (see below), whose sum is σ = 55826695836. Its totient is φ = 32015308800.

The previous prime is 42520332359. The next prime is 42520332443. The reversal of 42520332425 is 52423302524.

It can be written as a sum of positive squares in 6 ways, for example, as 2654619529 + 39865712896 = 51523^2 + 199664^2 .

It is not a de Polignac number, because 42520332425 - 2²⁴ = 42503555209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42520332391 and 42520332400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50023496 + ... + 50024345.

It is an arithmetic number, because the mean of its divisors is an integer number (4652224653).

Almost surely, 2^42520332425 is an apocalyptic number.

It is an amenable number.

42520332425 is a deficient number, since it is larger than the sum of its proper divisors (13306363411).

42520332425 is a wasteful number, since it uses less digits than its factorization.

42520332425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100047868 (or 100047863 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 42520332425 its reverse (52423302524), we get a palindrome (94943634949).

The spelling of 42520332425 in words is "forty-two billion, five hundred twenty million, three hundred thirty-two thousand, four hundred twenty-five".