32640325 has 12 divisors (see below), whose sum is σ = 41336640. Its totient is φ = 25555760.

The previous prime is 32640319. The next prime is 32640343. The reversal of 32640325 is 52304623.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-32640325 is a prime.

It is a super-2 number, since 2×32640325² = 2130781632211250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 32640325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12715 + ... + 15064.

It is an arithmetic number, because the mean of its divisors is an integer number (3444720).

Almost surely, 2^32640325 is an apocalyptic number.

It is an amenable number.

32640325 is a deficient number, since it is larger than the sum of its proper divisors (8696315).

32640325 is a wasteful number, since it uses less digits than its factorization.

32640325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27836 (or 27831 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 32640325 is about 5713.1711859527. The cubic root of 32640325 is about 319.5838503214.

Adding to 32640325 its reverse (52304623), we get a palindrome (84944948).

The spelling of 32640325 in words is "thirty-two million, six hundred forty thousand, three hundred twenty-five".