325625664 has 112 divisors (see below), whose sum is σ = 1060427648. Its totient is φ = 85874688.

The previous prime is 325625639. The next prime is 325625669. The reversal of 325625664 is 466526523.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325625669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8154 + ... + 26790.

It is an arithmetic number, because the mean of its divisors is an integer number (9468104).

Almost surely, 2^325625664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325625664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530213824).

325625664 is an abundant number, since it is smaller than the sum of its proper divisors (734801984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

325625664 is a wasteful number, since it uses less digits than its factorization.

325625664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18672 (or 18662 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The square root of 325625664 is about 18045.1008309735. The cubic root of 325625664 is about 687.9753461510.

It can be divided in two parts, 32562 and 5664, that added together give a triangular number (38226 = T₂₇₆).

The spelling of 325625664 in words is "three hundred twenty-five million, six hundred twenty-five thousand, six hundred sixty-four".