125448087308561 has 2 divisors, whose sum is σ = 125448087308562. Its totient is φ = 125448087308560.

The previous prime is 125448087308447. The next prime is 125448087308603. The reversal of 125448087308561 is 165803780844521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68901537483025 + 56546549825536 = 8300695^2 + 7519744^2 .

It is a cyclic number.

It is not a de Polignac number, because 125448087308561 - 2³⁴ = 125430907439377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125448087308494 and 125448087308503.

It is not a weakly prime, because it can be changed into another prime (125448087308161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62724043654280 + 62724043654281.

It is an arithmetic number, because the mean of its divisors is an integer number (62724043654281).

Almost surely, 2^{125448087308561} is an apocalyptic number.

It is an amenable number.

125448087308561 is a deficient number, since it is larger than the sum of its proper divisors (1).

125448087308561 is an equidigital number, since it uses as much as digits as its factorization.

125448087308561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51609600, while the sum is 62.

The spelling of 125448087308561 in words is "one hundred twenty-five trillion, four hundred forty-eight billion, eighty-seven million, three hundred eight thousand, five hundred sixty-one".