12562625021 has 2 divisors, whose sum is σ = 12562625022. Its totient is φ = 12562625020.

The previous prime is 12562624981. The next prime is 12562625027. The reversal of 12562625021 is 12052626521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12532802500 + 29822521 = 111950^2 + 5461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12562625021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12562625027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6281312510 + 6281312511.

It is an arithmetic number, because the mean of its divisors is an integer number (6281312511).

Almost surely, 2^12562625021 is an apocalyptic number.

It is an amenable number.

12562625021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12562625021 is an equidigital number, since it uses as much as digits as its factorization.

12562625021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 12562625021 in words is "twelve billion, five hundred sixty-two million, six hundred twenty-five thousand, twenty-one".