525398464 has 56 divisors (see below), whose sum is σ = 1108801440. Its totient is φ = 246153216.

The previous prime is 525398449. The next prime is 525398479. The reversal of 525398464 is 464893525.

It is an interprime number because it is at equal distance from previous prime (525398449) and next prime (525398479).

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, 278677 + ... + 280555.

Almost surely, 2^525398464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525398464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554400720).

525398464 is an abundant number, since it is smaller than the sum of its proper divisors (583402976).

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

525398464 is a wasteful number, since it uses less digits than its factorization.

525398464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165 (or 2155 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 46.

The square root of 525398464 is about 22921.5720228784. The cubic root of 525398464 is about 806.9183644894.

The spelling of 525398464 in words is "five hundred twenty-five million, three hundred ninety-eight thousand, four hundred sixty-four".