325988640 has 72 divisors (see below), whose sum is σ = 1112441148. Its totient is φ = 86929920.

The previous prime is 325988639. The next prime is 325988647. The reversal of 325988640 is 46889523.

It can be written as a sum of positive squares in 2 ways, for example, as 322705296 + 3283344 = 17964^2 + 1812^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (325988647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111751 + ... + 114630.

Almost surely, 2^325988640 is an apocalyptic number.

325988640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

325988640 is an abundant number, since it is smaller than the sum of its proper divisors (786452508).

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

325988640 is a wasteful number, since it uses less digits than its factorization.

325988640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226402 (or 226391 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 325988640 is about 18055.1554964226. The cubic root of 325988640 is about 688.2308806874.

The spelling of 325988640 in words is "three hundred twenty-five million, nine hundred eighty-eight thousand, six hundred forty".