125681723 has 2 divisors, whose sum is σ = 125681724. Its totient is φ = 125681722.

The previous prime is 125681681. The next prime is 125681747. The reversal of 125681723 is 327186521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125681723 - 2¹⁰ = 125680699 is a prime.

It is not a weakly prime, because it can be changed into another prime (125681783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62840861 + 62840862.

It is an arithmetic number, because the mean of its divisors is an integer number (62840862).

Almost surely, 2^125681723 is an apocalyptic number.

125681723 is a deficient number, since it is larger than the sum of its proper divisors (1).

125681723 is an equidigital number, since it uses as much as digits as its factorization.

125681723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 125681723 is about 11210.7860116943. The cubic root of 125681723 is about 500.9073165574.

The spelling of 125681723 in words is "one hundred twenty-five million, six hundred eighty-one thousand, seven hundred twenty-three".