30900025 has 24 divisors (see below), whose sum is σ = 42608384. Its totient is φ = 22075200.

The previous prime is 30900013. The next prime is 30900043. The reversal of 30900025 is 52000903.

It is a de Polignac number, because none of the positive numbers 2^k-30900025 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30899975 and 30900011.

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, 8542 + ... + 11608.

Almost surely, 2^30900025 is an apocalyptic number.

It is an amenable number.

30900025 is a deficient number, since it is larger than the sum of its proper divisors (11708359).

30900025 is a wasteful number, since it uses less digits than its factorization.

30900025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3116 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 30900025 is about 5558.7790925706. The cubic root of 30900025 is about 313.8000031414.

Adding to 30900025 its reverse (52000903), we get a palindrome (82900928).

The spelling of 30900025 in words is "thirty million, nine hundred thousand, twenty-five".