30939793146025 has 9 divisors (see below), whose sum is σ = 38365377987703. Its totient is φ = 24751812267400.

The previous prime is 30939793145957. The next prime is 30939793146029. The reversal of 30939793146025 is 52064139793903.

The square root of 30939793146025 is 5562355.

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., 11138325532569 + 19801467613456 = 3337413^2 + 4449884^2 .

It is not a de Polignac number, because 30939793146025 - 2¹¹ = 30939793143977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30939793146029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27255540 + ... + 28368010.

Almost surely, 2^{30939793146025} is an apocalyptic number.

30939793146025 is the 5562355-th square number.

30939793146025 is the 2781178-th centered octagonal number.

It is an amenable number.

30939793146025 is a deficient number, since it is larger than the sum of its proper divisors (7425584841678).

30939793146025 is an frugal number, since it uses more digits than its factorization.

30939793146025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224952 (or 1112476 counting only the distinct ones).

The product of its (nonzero) digits is 33067440, while the sum is 61.

It can be divided in two parts, 3093979 and 3146025, that added together give a square (6240004 = 2498²).

The spelling of 30939793146025 in words is "thirty trillion, nine hundred thirty-nine billion, seven hundred ninety-three million, one hundred forty-six thousand, twenty-five".