12990300625 has 45 divisors (see below), whose sum is σ = 16758150519. Its totient is φ = 10066272000.

The previous prime is 12990300623. The next prime is 12990300649. The reversal of 12990300625 is 52600309921.

The square root of 12990300625 is 113975.

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

It can be written as a sum of positive squares in 7 ways, for example, as 10526965201 + 2463335424 = 102601^2 + 49632^2 .

It is not a de Polignac number, because 12990300625 - 2¹ = 12990300623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12990300623) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 133920577 + ... + 133920673.

Almost surely, 2^12990300625 is an apocalyptic number.

12990300625 is the 113975-th square number.

12990300625 is the 56988-th centered octagonal number.

It is an amenable number.

12990300625 is a deficient number, since it is larger than the sum of its proper divisors (3767849894).

12990300625 is an frugal number, since it uses more digits than its factorization.

12990300625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The spelling of 12990300625 in words is "twelve billion, nine hundred ninety million, three hundred thousand, six hundred twenty-five".