30103985025 has 81 divisors (see below), whose sum is σ = 55408664649. Its totient is φ = 15623778240.

The previous prime is 30103984951. The next prime is 30103985027. The reversal of 30103985025 is 52058930103.

The square root of 30103985025 is 173505.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11547006849 + 18556978176 = 107457^2 + 136224^2 .

It is not a de Polignac number, because 30103985025 - 2³³ = 21514050433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30103985027) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 111910591 + ... + 111910859.

Almost surely, 2^30103985025 is an apocalyptic number.

30103985025 is the 173505-th square number.

30103985025 is the 86753-rd centered octagonal number.

It is an amenable number.

30103985025 is a deficient number, since it is larger than the sum of its proper divisors (25304679624).

30103985025 is an equidigital number, since it uses as much as digits as its factorization.

30103985025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Multiplying 30103985025 by its sum of digits (36), we get a square (1083743460900 = 1041030²).

Multiplying 30103985025 by its product of nonzero digits (32400), we get a square (975369114810000 = 31230900²).

The spelling of 30103985025 in words is "thirty billion, one hundred three million, nine hundred eighty-five thousand, twenty-five".