525939804 has 240 divisors, whose sum is σ = 1588023360. Its totient is φ = 150543360.

The previous prime is 525939763. The next prime is 525939809. The reversal of 525939804 is 408939525.

525939804 is a `hidden beast` number, since 5 + 259 + 398 + 0 + 4 = 666.

It is a super-2 number, since 2×525939804² = 553225354863116832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 525939804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525939809) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5909392 + ... + 5909480.

It is an arithmetic number, because the mean of its divisors is an integer number (6616764).

Almost surely, 2^525939804 is an apocalyptic number.

525939804 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525939804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794011680).

525939804 is an abundant number, since it is smaller than the sum of its proper divisors (1062083556).

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

525939804 is a wasteful number, since it uses less digits than its factorization.

525939804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 525939804 is about 22933.3775096474. The cubic root of 525939804 is about 807.1954032702.

The spelling of 525939804 in words is "five hundred twenty-five million, nine hundred thirty-nine thousand, eight hundred four".