525643522 has 16 divisors (see below), whose sum is σ = 794489472. Its totient is φ = 260819200.

The previous prime is 525643513. The next prime is 525643529. The reversal of 525643522 is 225346525.

It is a super-2 number, since 2×525643522² = 552602224441128968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (525643529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327522 + ... + 329122.

It is an arithmetic number, because the mean of its divisors is an integer number (49655592).

Almost surely, 2^525643522 is an apocalyptic number.

525643522 is a deficient number, since it is larger than the sum of its proper divisors (268845950).

525643522 is a wasteful number, since it uses less digits than its factorization.

525643522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753.

The product of its digits is 72000, while the sum is 34.

The square root of 525643522 is about 22926.9169754679. The cubic root of 525643522 is about 807.0438001212.

The spelling of 525643522 in words is "five hundred twenty-five million, six hundred forty-three thousand, five hundred twenty-two".