125811919327 has 24 divisors (see below), whose sum is σ = 134993555424. Its totient is φ = 117029493504.

The previous prime is 125811919301. The next prime is 125811919357. The reversal of 125811919327 is 723919118521.

It is not a de Polignac number, because 125811919327 - 2⁷ = 125811919199 is a prime.

It is a super-2 number, since 2×125811919327² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125811919357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9902443 + ... + 9915139.

It is an arithmetic number, because the mean of its divisors is an integer number (5624731476).

Almost surely, 2^125811919327 is an apocalyptic number.

125811919327 is a deficient number, since it is larger than the sum of its proper divisors (9181636097).

125811919327 is a wasteful number, since it uses less digits than its factorization.

125811919327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13039 (or 12996 counting only the distinct ones).

The product of its digits is 272160, while the sum is 49.

The spelling of 125811919327 in words is "one hundred twenty-five billion, eight hundred eleven million, nine hundred nineteen thousand, three hundred twenty-seven".