12397709025 has 81 divisors (see below), whose sum is σ = 24087382137. Its totient is φ = 6092798400.

The previous prime is 12397708969. The next prime is 12397709033. The reversal of 12397709025 is 52090779321.

The square root of 12397709025 is 111345.

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

12397709025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3195527841 + 9202181184 = 56529^2 + 95928^2 .

It is not a de Polignac number, because 12397709025 - 2²¹ = 12395611873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 21711990 + ... + 21712560.

Almost surely, 2^12397709025 is an apocalyptic number.

12397709025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12397709025 is the 111345-th square number.

12397709025 is the 55673-rd centered octagonal number.

It is an amenable number.

12397709025 is a deficient number, since it is larger than the sum of its proper divisors (11689673112).

12397709025 is an equidigital number, since it uses as much as digits as its factorization.

12397709025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The spelling of 12397709025 in words is "twelve billion, three hundred ninety-seven million, seven hundred nine thousand, twenty-five".