125511189157 has 2 divisors, whose sum is σ = 125511189158. Its totient is φ = 125511189156.

The previous prime is 125511189113. The next prime is 125511189173. The reversal of 125511189157 is 751981115521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109694102401 + 15817086756 = 331201^2 + 125766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125511189157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125511189187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62755594578 + 62755594579.

It is an arithmetic number, because the mean of its divisors is an integer number (62755594579).

Almost surely, 2^125511189157 is an apocalyptic number.

It is an amenable number.

125511189157 is a deficient number, since it is larger than the sum of its proper divisors (1).

125511189157 is an equidigital number, since it uses as much as digits as its factorization.

125511189157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 46.

The spelling of 125511189157 in words is "one hundred twenty-five billion, five hundred eleven million, one hundred eighty-nine thousand, one hundred fifty-seven".