125965082891 has 2 divisors, whose sum is σ = 125965082892. Its totient is φ = 125965082890.

The previous prime is 125965082849. The next prime is 125965082917. The reversal of 125965082891 is 198280569521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125965082891 - 2¹⁰ = 125965081867 is a prime.

It is not a weakly prime, because it can be changed into another prime (125965088891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62982541445 + 62982541446.

It is an arithmetic number, because the mean of its divisors is an integer number (62982541446).

Almost surely, 2^125965082891 is an apocalyptic number.

125965082891 is a deficient number, since it is larger than the sum of its proper divisors (1).

125965082891 is an equidigital number, since it uses as much as digits as its factorization.

125965082891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 56.

The spelling of 125965082891 in words is "one hundred twenty-five billion, nine hundred sixty-five million, eighty-two thousand, eight hundred ninety-one".