125898161731 has 2 divisors, whose sum is σ = 125898161732. Its totient is φ = 125898161730.

The previous prime is 125898161729. The next prime is 125898161759. The reversal of 125898161731 is 137161898521.

It is a weak prime.

It is an emirp because it is prime and its reverse (137161898521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125898161731 - 2¹ = 125898161729 is a prime.

It is a super-2 number, since 2×125898161731² (a number of 23 digits) contains 22 as substring.

Together with 125898161729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125898101731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62949080865 + 62949080866.

It is an arithmetic number, because the mean of its divisors is an integer number (62949080866).

Almost surely, 2^125898161731 is an apocalyptic number.

125898161731 is a deficient number, since it is larger than the sum of its proper divisors (1).

125898161731 is an equidigital number, since it uses as much as digits as its factorization.

125898161731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 52.

The spelling of 125898161731 in words is "one hundred twenty-five billion, eight hundred ninety-eight million, one hundred sixty-one thousand, seven hundred thirty-one".