125669611 has 4 divisors (see below), whose sum is σ = 126965272. Its totient is φ = 124373952.

The previous prime is 125669597. The next prime is 125669617. The reversal of 125669611 is 116966521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116966521 = 7 ⋅16709503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125669611 is a prime.

It is a super-2 number, since 2×125669611² = 31585702257782642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125669617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647685 + ... + 647878.

It is an arithmetic number, because the mean of its divisors is an integer number (31741318).

Almost surely, 2^125669611 is an apocalyptic number.

125669611 is a deficient number, since it is larger than the sum of its proper divisors (1295661).

125669611 is an equidigital number, since it uses as much as digits as its factorization.

125669611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295660.

The product of its digits is 19440, while the sum is 37.

The square root of 125669611 is about 11210.2458046200. The cubic root of 125669611 is about 500.8912251583.

The spelling of 125669611 in words is "one hundred twenty-five million, six hundred sixty-nine thousand, six hundred eleven".