125655712901 has 2 divisors, whose sum is σ = 125655712902. Its totient is φ = 125655712900.

The previous prime is 125655712873. The next prime is 125655712907. The reversal of 125655712901 is 109217556521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121974864001 + 3680848900 = 349249^2 + 60670^2 .

It is a cyclic number.

It is not a de Polignac number, because 125655712901 - 2⁶ = 125655712837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125655712907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62827856450 + 62827856451.

It is an arithmetic number, because the mean of its divisors is an integer number (62827856451).

Almost surely, 2^125655712901 is an apocalyptic number.

It is an amenable number.

125655712901 is a deficient number, since it is larger than the sum of its proper divisors (1).

125655712901 is an equidigital number, since it uses as much as digits as its factorization.

125655712901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 44.

The spelling of 125655712901 in words is "one hundred twenty-five billion, six hundred fifty-five million, seven hundred twelve thousand, nine hundred one".