125699671 has 2 divisors, whose sum is σ = 125699672. Its totient is φ = 125699670.

The previous prime is 125699657. The next prime is 125699701. The reversal of 125699671 is 176996521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125699671 - 2¹⁵ = 125666903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125699771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62849835 + 62849836.

It is an arithmetic number, because the mean of its divisors is an integer number (62849836).

Almost surely, 2^125699671 is an apocalyptic number.

125699671 is a deficient number, since it is larger than the sum of its proper divisors (1).

125699671 is an equidigital number, since it uses as much as digits as its factorization.

125699671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 46.

The square root of 125699671 is about 11211.5864622274. The cubic root of 125699671 is about 500.9311594742.

The spelling of 125699671 in words is "one hundred twenty-five million, six hundred ninety-nine thousand, six hundred seventy-one".