32640925 has 6 divisors (see below), whose sum is σ = 40474778. Its totient is φ = 26112720.

The previous prime is 32640899. The next prime is 32640931. The reversal of 32640925 is 52904623.

It can be written as a sum of positive squares in 3 ways, for example, as 3545689 + 29095236 = 1883^2 + 5394^2 .

It is not a de Polignac number, because 32640925 - 2⁵ = 32640893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 652794 + ... + 652843.

Almost surely, 2^32640925 is an apocalyptic number.

It is an amenable number.

32640925 is a deficient number, since it is larger than the sum of its proper divisors (7833853).

32640925 is a wasteful number, since it uses less digits than its factorization.

32640925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305647 (or 1305642 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 32640925 is about 5713.2236959531. The cubic root of 32640925 is about 319.5858085243.

The spelling of 32640925 in words is "thirty-two million, six hundred forty thousand, nine hundred twenty-five".