125402620997 has 2 divisors, whose sum is σ = 125402620998. Its totient is φ = 125402620996.

The previous prime is 125402620991. The next prime is 125402621011. The reversal of 125402620997 is 799026204521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72892440196 + 52510180801 = 269986^2 + 229151^2 .

It is a cyclic number.

It is not a de Polignac number, because 125402620997 - 2¹⁰ = 125402619973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125402620991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62701310498 + 62701310499.

It is an arithmetic number, because the mean of its divisors is an integer number (62701310499).

Almost surely, 2^125402620997 is an apocalyptic number.

It is an amenable number.

125402620997 is a deficient number, since it is larger than the sum of its proper divisors (1).

125402620997 is an equidigital number, since it uses as much as digits as its factorization.

125402620997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 125402620997 in words is "one hundred twenty-five billion, four hundred two million, six hundred twenty thousand, nine hundred ninety-seven".