125420632697 has 2 divisors, whose sum is σ = 125420632698. Its totient is φ = 125420632696.

The previous prime is 125420632693. The next prime is 125420632703. The reversal of 125420632697 is 796236024521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116810834176 + 8609798521 = 341776^2 + 92789^2 .

It is a cyclic number.

It is not a de Polignac number, because 125420632697 - 2² = 125420632693 is a prime.

It is a super-2 number, since 2×125420632697² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125420632693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62710316348 + 62710316349.

It is an arithmetic number, because the mean of its divisors is an integer number (62710316349).

Almost surely, 2^125420632697 is an apocalyptic number.

It is an amenable number.

125420632697 is a deficient number, since it is larger than the sum of its proper divisors (1).

125420632697 is an equidigital number, since it uses as much as digits as its factorization.

125420632697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 125420632697 in words is "one hundred twenty-five billion, four hundred twenty million, six hundred thirty-two thousand, six hundred ninety-seven".