525467990 has 64 divisors (see below), whose sum is σ = 1025879040. Its totient is φ = 193692384.

The previous prime is 525467927. The next prime is 525468001. The reversal of 525467990 is 99764525.

It is a super-2 number, since 2×525467990² = 552233217029280200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3223649 + ... + 3223811.

It is an arithmetic number, because the mean of its divisors is an integer number (16029360).

Almost surely, 2^525467990 is an apocalyptic number.

525467990 is a deficient number, since it is larger than the sum of its proper divisors (500411050).

525467990 is a wasteful number, since it uses less digits than its factorization.

525467990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 525467990 is about 22923.0885789852. The cubic root of 525467990 is about 806.9539560995.

The spelling of 525467990 in words is "five hundred twenty-five million, four hundred sixty-seven thousand, nine hundred ninety".