125145769 has 4 divisors (see below), whose sum is σ = 143023744. Its totient is φ = 107267796.

The previous prime is 125145751. The next prime is 125145793. The reversal of 125145769 is 967541521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125145769 - 2⁷ = 125145641 is a prime.

It is a super-2 number, since 2×125145769² = 31322926997202722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125145569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8938977 + ... + 8938990.

It is an arithmetic number, because the mean of its divisors is an integer number (35755936).

Almost surely, 2^125145769 is an apocalyptic number.

It is an amenable number.

125145769 is a deficient number, since it is larger than the sum of its proper divisors (17877975).

125145769 is an equidigital number, since it uses as much as digits as its factorization.

125145769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17877974.

The product of its digits is 75600, while the sum is 40.

The square root of 125145769 is about 11186.8569759339. The cubic root of 125145769 is about 500.1942831650.

The spelling of 125145769 in words is "one hundred twenty-five million, one hundred forty-five thousand, seven hundred sixty-nine".