12976627225 has 9 divisors (see below), whose sum is σ = 16091724063. Its totient is φ = 10380846120.

The previous prime is 12976627199. The next prime is 12976627229. The reversal of 12976627225 is 52272667921.

It is a happy number.

The square root of 12976627225 is 113915.

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., 4671585801 + 8305041424 = 68349^2 + 91132^2 .

It is not a de Polignac number, because 12976627225 - 2²⁹ = 12439756313 is a prime.

It is a super-2 number, since 2×12976627225² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12976627229) 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, 558184 + ... + 580966.

Almost surely, 2^12976627225 is an apocalyptic number.

12976627225 is the 113915-th square number.

12976627225 is the 56958-th centered octagonal number.

It is an amenable number.

12976627225 is a deficient number, since it is larger than the sum of its proper divisors (3115096838).

12976627225 is an frugal number, since it uses more digits than its factorization.

12976627225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45576 (or 22788 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 49.

Multiplying 12976627225 by its sum of digits (49), we get a square (635854734025 = 797405²).

The spelling of 12976627225 in words is "twelve billion, nine hundred seventy-six million, six hundred twenty-seven thousand, two hundred twenty-five".