325405530 has 48 divisors (see below), whose sum is σ = 857661480. Its totient is φ = 85584384.

The previous prime is 325405529. The next prime is 325405547. The reversal of 325405530 is 35504523.

It can be written as a sum of positive squares in 4 ways, for example, as 184769649 + 140635881 = 13593^2 + 11859^2 .

It is a junction number, because it is equal to n+sod(n) for n = 325405494 and 325405503.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18195 + ... + 31334.

Almost surely, 2^325405530 is an apocalyptic number.

325405530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

325405530 is an abundant number, since it is smaller than the sum of its proper divisors (532255950).

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

325405530 is a wasteful number, since it uses less digits than its factorization.

325405530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49615 (or 49612 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 325405530 is about 18039.0002494595. Note that the first 3 decimals coincide. The cubic root of 325405530 is about 687.8202796415.

The spelling of 325405530 in words is "three hundred twenty-five million, four hundred five thousand, five hundred thirty".