325404661565 has 16 divisors (see below), whose sum is σ = 411089851200. Its totient is φ = 246591050112.

The previous prime is 325404661559. The next prime is 325404661607. The reversal of 325404661565 is 565166404523.

It is a cyclic number.

It is not a de Polignac number, because 325404661565 - 2²⁸ = 325136226109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545066 + ... + 973604.

It is an arithmetic number, because the mean of its divisors is an integer number (25693115700).

Almost surely, 2^325404661565 is an apocalyptic number.

It is an amenable number.

325404661565 is a deficient number, since it is larger than the sum of its proper divisors (85685189635).

325404661565 is a wasteful number, since it uses less digits than its factorization.

325404661565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436556.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 325404661565 in words is "three hundred twenty-five billion, four hundred four million, six hundred sixty-one thousand, five hundred sixty-five".