30787966225 has 27 divisors (see below), whose sum is σ = 40313978427. Its totient is φ = 23321404080.

The previous prime is 30787966207. The next prime is 30787966247. The reversal of 30787966225 is 52266978703.

The square root of 30787966225 is 175465.

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

It can be written as a sum of positive squares in only one way, i.e., 11083667841 + 19704298384 = 105279^2 + 140372^2 .

It is not a de Polignac number, because 30787966225 - 2¹¹ = 30787964177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 16668252 + ... + 16670098.

Almost surely, 2^30787966225 is an apocalyptic number.

30787966225 is the 175465-th square number.

30787966225 is the 87733-rd centered octagonal number.

It is an amenable number.

30787966225 is a deficient number, since it is larger than the sum of its proper divisors (9526012202).

30787966225 is an frugal number, since it uses more digits than its factorization.

30787966225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742 (or 1871 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 30787966225 in words is "thirty billion, seven hundred eighty-seven million, nine hundred sixty-six thousand, two hundred twenty-five".