525299420 has 24 divisors (see below), whose sum is σ = 1121828400. Its totient is φ = 206557952.

The previous prime is 525299413. The next prime is 525299431. The reversal of 525299420 is 24992525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221405 + ... + 223764.

It is an arithmetic number, because the mean of its divisors is an integer number (46742850).

Almost surely, 2^525299420 is an apocalyptic number.

It is an amenable number.

525299420 is an abundant number, since it is smaller than the sum of its proper divisors (596528980).

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

525299420 is a wasteful number, since it uses less digits than its factorization.

525299420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445237 (or 445235 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 525299420 is about 22919.4114235074. The cubic root of 525299420 is about 806.8676566613.

The spelling of 525299420 in words is "five hundred twenty-five million, two hundred ninety-nine thousand, four hundred twenty".