125811469 has 6 divisors (see below), whose sum is σ = 146352174. Its totient is φ = 107838360.

The previous prime is 125811467. The next prime is 125811481. The reversal of 125811469 is 964118521.

It can be written as a sum of positive squares in only one way, i.e., 100761444 + 25050025 = 10038^2 + 5005^2 .

It is not a de Polignac number, because 125811469 - 2¹ = 125811467 is a prime.

It is a super-2 number, since 2×125811469² = 31657051463875922, 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 (125811467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1283742 + ... + 1283839.

It is an arithmetic number, because the mean of its divisors is an integer number (24392029).

Almost surely, 2^125811469 is an apocalyptic number.

It is an amenable number.

125811469 is a deficient number, since it is larger than the sum of its proper divisors (20540705).

125811469 is an equidigital number, since it uses as much as digits as its factorization.

125811469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567595 (or 2567588 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 125811469 is about 11216.5711783949. The cubic root of 125811469 is about 501.0796258050.

The spelling of 125811469 in words is "one hundred twenty-five million, eight hundred eleven thousand, four hundred sixty-nine".