30636725 has 12 divisors (see below), whose sum is σ = 43416864. Its totient is φ = 21007920.

The previous prime is 30636719. The next prime is 30636733. The reversal of 30636725 is 52763603.

It is not a de Polignac number, because 30636725 - 2⁸ = 30636469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30636691 and 30636700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87359 + ... + 87708.

It is an arithmetic number, because the mean of its divisors is an integer number (3618072).

Almost surely, 2^30636725 is an apocalyptic number.

30636725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30636725 is a deficient number, since it is larger than the sum of its proper divisors (12780139).

30636725 is a wasteful number, since it uses less digits than its factorization.

30636725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175084 (or 175079 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 32.

The square root of 30636725 is about 5535.0451669341. The cubic root of 30636725 is about 312.9061598806.

The spelling of 30636725 in words is "thirty million, six hundred thirty-six thousand, seven hundred twenty-five".