125743681 has 16 divisors (see below), whose sum is σ = 149212800. Its totient is φ = 103678848.

The previous prime is 125743663. The next prime is 125743697. The reversal of 125743681 is 186347521.

It is not a de Polignac number, because 125743681 - 2¹⁵ = 125710913 is a prime.

It is a super-2 number, since 2×125743681² = 31622946622859522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125743681.

It is not an unprimeable number, because it can be changed into a prime (125743601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62550 + ... + 64528.

It is an arithmetic number, because the mean of its divisors is an integer number (9325800).

Almost surely, 2^125743681 is an apocalyptic number.

It is an amenable number.

125743681 is a deficient number, since it is larger than the sum of its proper divisors (23469119).

125743681 is a wasteful number, since it uses less digits than its factorization.

125743681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328.

The product of its digits is 40320, while the sum is 37.

The square root of 125743681 is about 11213.5489921791. The cubic root of 125743681 is about 500.9896146999.

The spelling of 125743681 in words is "one hundred twenty-five million, seven hundred forty-three thousand, six hundred eighty-one".