125740652069 has 2 divisors, whose sum is σ = 125740652070. Its totient is φ = 125740652068.

The previous prime is 125740652053. The next prime is 125740652101. The reversal of 125740652069 is 960256047521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111781229569 + 13959422500 = 334337^2 + 118150^2 .

It is a cyclic number.

It is not a de Polignac number, because 125740652069 - 2⁴ = 125740652053 is a prime.

It is a super-2 number, since 2×125740652069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125740652039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62870326034 + 62870326035.

It is an arithmetic number, because the mean of its divisors is an integer number (62870326035).

Almost surely, 2^125740652069 is an apocalyptic number.

It is an amenable number.

125740652069 is a deficient number, since it is larger than the sum of its proper divisors (1).

125740652069 is an equidigital number, since it uses as much as digits as its factorization.

125740652069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 125740652069 in words is "one hundred twenty-five billion, seven hundred forty million, six hundred fifty-two thousand, sixty-nine".