215925146 has 16 divisors (see below), whose sum is σ = 329370624. Its totient is φ = 106150464.

The previous prime is 215925133. The next prime is 215925161. The reversal of 215925146 is 641529512.

It is a happy number.

215925146 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24941 + ... + 32463.

It is an arithmetic number, because the mean of its divisors is an integer number (20585664).

Almost surely, 2^215925146 is an apocalyptic number.

215925146 is a deficient number, since it is larger than the sum of its proper divisors (113445478).

215925146 is a wasteful number, since it uses less digits than its factorization.

215925146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7765.

The product of its digits is 21600, while the sum is 35.

The square root of 215925146 is about 14694.3916512389. The cubic root of 215925146 is about 599.9306827329.

The spelling of 215925146 in words is "two hundred fifteen million, nine hundred twenty-five thousand, one hundred forty-six".