323640225 has 48 divisors (see below), whose sum is σ = 600229440. Its totient is φ = 170956800.

The previous prime is 323640151. The next prime is 323640277. The reversal of 323640225 is 522046323.

323640225 is a `hidden beast` number, since 3 + 236 + 402 + 25 = 666.

It is not a de Polignac number, because 323640225 - 2²¹ = 321543073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69985 + ... + 74465.

It is an arithmetic number, because the mean of its divisors is an integer number (12504780).

Almost surely, 2^323640225 is an apocalyptic number.

It is an amenable number.

323640225 is a deficient number, since it is larger than the sum of its proper divisors (276589215).

323640225 is a wasteful number, since it uses less digits than its factorization.

323640225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607 (or 4596 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 323640225 is about 17990.0034741520. The cubic root of 323640225 is about 686.5742294218.

Adding to 323640225 its reverse (522046323), we get a palindrome (845686548).

The spelling of 323640225 in words is "three hundred twenty-three million, six hundred forty thousand, two hundred twenty-five".