125769691 has 2 divisors, whose sum is σ = 125769692. Its totient is φ = 125769690.

The previous prime is 125769667. The next prime is 125769703. The reversal of 125769691 is 196967521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125769691 - 2¹³ = 125761499 is a prime.

It is not a weakly prime, because it can be changed into another prime (125769661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62884845 + 62884846.

It is an arithmetic number, because the mean of its divisors is an integer number (62884846).

Almost surely, 2^125769691 is an apocalyptic number.

125769691 is a deficient number, since it is larger than the sum of its proper divisors (1).

125769691 is an equidigital number, since it uses as much as digits as its factorization.

125769691 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 125769691 is about 11214.7086899304. The cubic root of 125769691 is about 501.0241554456.

The spelling of 125769691 in words is "one hundred twenty-five million, seven hundred sixty-nine thousand, six hundred ninety-one".