921285925 has 24 divisors (see below), whose sum is σ = 1308505536. Its totient is φ = 630330240.

The previous prime is 921285901. The next prime is 921285941. The reversal of 921285925 is 529582129.

It is not a de Polignac number, because 921285925 - 2⁷ = 921285797 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76089 + ... + 87361.

It is an arithmetic number, because the mean of its divisors is an integer number (54521064).

Almost surely, 2^921285925 is an apocalyptic number.

It is an amenable number.

921285925 is a deficient number, since it is larger than the sum of its proper divisors (387219611).

921285925 is a wasteful number, since it uses less digits than its factorization.

921285925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11757 (or 11752 counting only the distinct ones).

The product of its digits is 129600, while the sum is 43.

The square root of 921285925 is about 30352.6922199663. The cubic root of 921285925 is about 973.0417588383.

The spelling of 921285925 in words is "nine hundred twenty-one million, two hundred eighty-five thousand, nine hundred twenty-five".