30620625 has 40 divisors (see below), whose sum is σ = 58331328. Its totient is φ = 13992000.

The previous prime is 30620581. The next prime is 30620633. The reversal of 30620625 is 52602603.

It is not a de Polignac number, because 30620625 - 2⁹ = 30620113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30620595 and 30620604.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11959 + ... + 14291.

Almost surely, 2^30620625 is an apocalyptic number.

30620625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30620625 is a deficient number, since it is larger than the sum of its proper divisors (27710703).

30620625 is an equidigital number, since it uses as much as digits as its factorization.

30620625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363 (or 2348 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 30620625 is about 5533.5906064688. The cubic root of 30620625 is about 312.8513381820.

The spelling of 30620625 in words is "thirty million, six hundred twenty thousand, six hundred twenty-five".