215250885 has 16 divisors (see below), whose sum is σ = 382668480. Its totient is φ = 114800400.

The previous prime is 215250881. The next prime is 215250977. The reversal of 215250885 is 588052512.

215250885 is a `hidden beast` number, since 21 + 52 + 508 + 85 = 666.

It is not a de Polignac number, because 215250885 - 2² = 215250881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215250881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797091 + ... + 797360.

It is an arithmetic number, because the mean of its divisors is an integer number (23916780).

Almost surely, 2^215250885 is an apocalyptic number.

It is an amenable number.

215250885 is a deficient number, since it is larger than the sum of its proper divisors (167417595).

215250885 is a wasteful number, since it uses less digits than its factorization.

215250885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594465 (or 1594459 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 215250885 is about 14671.4309118095. The cubic root of 215250885 is about 599.3055715920.

The spelling of 215250885 in words is "two hundred fifteen million, two hundred fifty thousand, eight hundred eighty-five".