125417969 has 2 divisors, whose sum is σ = 125417970. Its totient is φ = 125417968.

The previous prime is 125417947. The next prime is 125418023. The reversal of 125417969 is 969714521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122921569 + 2496400 = 11087^2 + 1580^2 .

It is a cyclic number.

It is not a de Polignac number, because 125417969 - 2¹⁶ = 125352433 is a prime.

It is a super-2 number, since 2×125417969² = 31459333896169922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (125417939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62708984 + 62708985.

It is an arithmetic number, because the mean of its divisors is an integer number (62708985).

Almost surely, 2^125417969 is an apocalyptic number.

It is an amenable number.

125417969 is a deficient number, since it is larger than the sum of its proper divisors (1).

125417969 is an equidigital number, since it uses as much as digits as its factorization.

125417969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 44.

The square root of 125417969 is about 11199.0164300263. The cubic root of 125417969 is about 500.5566720026.

The spelling of 125417969 in words is "one hundred twenty-five million, four hundred seventeen thousand, nine hundred sixty-nine".