125909269 has 4 divisors (see below), whose sum is σ = 125937196. Its totient is φ = 125881344.

The previous prime is 125909249. The next prime is 125909299. The reversal of 125909269 is 962909521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36360900 + 89548369 = 6030^2 + 9463^2 .

It is a cyclic number.

It is not a de Polignac number, because 125909269 - 2¹³ = 125901077 is a prime.

It is a super-2 number, since 2×125909269² = 31706288040228722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125909249) 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, 5484 + ... + 16789.

It is an arithmetic number, because the mean of its divisors is an integer number (31484299).

Almost surely, 2^125909269 is an apocalyptic number.

It is an amenable number.

125909269 is a deficient number, since it is larger than the sum of its proper divisors (27927).

125909269 is an equidigital number, since it uses as much as digits as its factorization.

125909269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27926.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 125909269 is about 11220.9299525485. The cubic root of 125909269 is about 501.2094308619.

The spelling of 125909269 in words is "one hundred twenty-five million, nine hundred nine thousand, two hundred sixty-nine".