525440990 has 16 divisors (see below), whose sum is σ = 946129248. Its totient is φ = 210101856.

The previous prime is 525440987. The next prime is 525441019. The reversal of 525440990 is 99044525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27044 + ... + 42216.

It is an arithmetic number, because the mean of its divisors is an integer number (59133078).

Almost surely, 2^525440990 is an apocalyptic number.

525440990 is a deficient number, since it is larger than the sum of its proper divisors (420688258).

525440990 is a wasteful number, since it uses less digits than its factorization.

525440990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18643.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 525440990 is about 22922.4996455448. The cubic root of 525440990 is about 806.9401346867.

The spelling of 525440990 in words is "five hundred twenty-five million, four hundred forty thousand, nine hundred ninety".