32640625 has 14 divisors (see below), whose sum is σ = 40819790. Its totient is φ = 26100000.

The previous prime is 32640599. The next prime is 32640637. The reversal of 32640625 is 52604623.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 31550689 + 1089936 = 5617^2 + 1044^2 .

It is not a de Polignac number, because 32640625 - 2²¹ = 30543473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32640593 and 32640602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 14581 + ... + 16669.

Almost surely, 2^32640625 is an apocalyptic number.

It is an amenable number.

32640625 is a deficient number, since it is larger than the sum of its proper divisors (8179165).

32640625 is an frugal number, since it uses more digits than its factorization.

32640625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119 (or 2094 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 32640625 is about 5713.1974410132. The cubic root of 32640625 is about 319.5848294258.

The spelling of 32640625 in words is "thirty-two million, six hundred forty thousand, six hundred twenty-five".