125798669 has 2 divisors, whose sum is σ = 125798670. Its totient is φ = 125798668.

The previous prime is 125798641. The next prime is 125798681. The reversal of 125798669 is 966897521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69923044 + 55875625 = 8362^2 + 7475^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125798669 is a prime.

It is a super-2 number, since 2×125798669² = 31650610244343122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125798669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125798689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62899334 + 62899335.

It is an arithmetic number, because the mean of its divisors is an integer number (62899335).

Almost surely, 2^125798669 is an apocalyptic number.

It is an amenable number.

125798669 is a deficient number, since it is larger than the sum of its proper divisors (1).

125798669 is an equidigital number, since it uses as much as digits as its factorization.

125798669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 53.

The square root of 125798669 is about 11216.0005795292. Note that the first 3 decimals coincide. The cubic root of 125798669 is about 501.0626320265.

The spelling of 125798669 in words is "one hundred twenty-five million, seven hundred ninety-eight thousand, six hundred sixty-nine".