325553531 has 4 divisors (see below), whose sum is σ = 330138864. Its totient is φ = 320968200.

The previous prime is 325553521. The next prime is 325553551. The reversal of 325553531 is 135355523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135355523 = 61 ⋅2218943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325553531 is a prime.

It is a super-2 number, since 2×325553531² = 211970203093135922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (325553521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2292560 + ... + 2292701.

It is an arithmetic number, because the mean of its divisors is an integer number (82534716).

Almost surely, 2^325553531 is an apocalyptic number.

325553531 is a deficient number, since it is larger than the sum of its proper divisors (4585333).

325553531 is an equidigital number, since it uses as much as digits as its factorization.

325553531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585332.

The product of its digits is 33750, while the sum is 32.

The square root of 325553531 is about 18043.1020337413. The cubic root of 325553531 is about 687.9245420161.

The spelling of 325553531 in words is "three hundred twenty-five million, five hundred fifty-three thousand, five hundred thirty-one".