125252222252621 has 2 divisors, whose sum is σ = 125252222252622. Its totient is φ = 125252222252620.

The previous prime is 125252222252587. The next prime is 125252222252627. The reversal of 125252222252621 is 126252222252521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117287578743721 + 7964643508900 = 10829939^2 + 2822170^2 .

It is a cyclic number.

It is not a de Polignac number, because 125252222252621 - 2¹⁸ = 125252221990477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125252222252627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62626111126310 + 62626111126311.

It is an arithmetic number, because the mean of its divisors is an integer number (62626111126311).

Almost surely, 2^{125252222252621} is an apocalyptic number.

It is an amenable number.

125252222252621 is a deficient number, since it is larger than the sum of its proper divisors (1).

125252222252621 is an equidigital number, since it uses as much as digits as its factorization.

125252222252621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384000, while the sum is 41.

The spelling of 125252222252621 in words is "one hundred twenty-five trillion, two hundred fifty-two billion, two hundred twenty-two million, two hundred fifty-two thousand, six hundred twenty-one".