525477728 has 12 divisors (see below), whose sum is σ = 1034534340. Its totient is φ = 262738848.

The previous prime is 525477707. The next prime is 525477779. The reversal of 525477728 is 827774525.

It is a super-2 number, since 2×525477728² = 552253685248083968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8210558 + ... + 8210621.

It is an arithmetic number, because the mean of its divisors is an integer number (86211195).

Almost surely, 2^525477728 is an apocalyptic number.

It is an amenable number.

525477728 is a deficient number, since it is larger than the sum of its proper divisors (509056612).

525477728 is a wasteful number, since it uses less digits than its factorization.

525477728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16421189 (or 16421181 counting only the distinct ones).

The product of its digits is 1097600, while the sum is 47.

The square root of 525477728 is about 22923.3009839334. The cubic root of 525477728 is about 806.9589409062.

The spelling of 525477728 in words is "five hundred twenty-five million, four hundred seventy-seven thousand, seven hundred twenty-eight".