425508520 has 16 divisors (see below), whose sum is σ = 957394260. Its totient is φ = 170203392.

The previous prime is 425508493. The next prime is 425508527. The reversal of 425508520 is 25805524.

It can be written as a sum of positive squares in 2 ways, for example, as 403286724 + 22221796 = 20082^2 + 4714^2 .

It is not an unprimeable number, because it can be changed into a prime (425508527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5318817 + ... + 5318896.

Almost surely, 2^425508520 is an apocalyptic number.

425508520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425508520 is an abundant number, since it is smaller than the sum of its proper divisors (531885740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425508520 is a wasteful number, since it uses less digits than its factorization.

425508520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10637724 (or 10637720 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 425508520 is about 20627.8578626090. The cubic root of 425508520 is about 752.1470447702.

The spelling of 425508520 in words is "four hundred twenty-five million, five hundred eight thousand, five hundred twenty".