125652165517 has 2 divisors, whose sum is σ = 125652165518. Its totient is φ = 125652165516.

The previous prime is 125652165461. The next prime is 125652165523. The reversal of 125652165517 is 715561256521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87131822761 + 38520342756 = 295181^2 + 196266^2 .

It is an emirp because it is prime and its reverse (715561256521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125652165517 - 2⁷ = 125652165389 is a prime.

It is a super-2 number, since 2×125652165517² (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 (125652165817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62826082758 + 62826082759.

It is an arithmetic number, because the mean of its divisors is an integer number (62826082759).

Almost surely, 2^125652165517 is an apocalyptic number.

It is an amenable number.

125652165517 is a deficient number, since it is larger than the sum of its proper divisors (1).

125652165517 is an equidigital number, since it uses as much as digits as its factorization.

125652165517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630000, while the sum is 46.

The spelling of 125652165517 in words is "one hundred twenty-five billion, six hundred fifty-two million, one hundred sixty-five thousand, five hundred seventeen".