125535769 has 4 divisors (see below), whose sum is σ = 132920244. Its totient is φ = 118151296.

The previous prime is 125535763. The next prime is 125535799. The reversal of 125535769 is 967535521.

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 109830400 + 15705369 = 10480^2 + 3963^2 .

It is a cyclic number.

It is not a de Polignac number, because 125535769 - 2⁹ = 125535257 is a prime.

It is a super-2 number, since 2×125535769² = 31518458596842722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125535763) 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, 3692212 + ... + 3692245.

It is an arithmetic number, because the mean of its divisors is an integer number (33230061).

Almost surely, 2^125535769 is an apocalyptic number.

It is an amenable number.

125535769 is a deficient number, since it is larger than the sum of its proper divisors (7384475).

125535769 is an equidigital number, since it uses as much as digits as its factorization.

125535769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7384474.

The product of its digits is 283500, while the sum is 43.

The square root of 125535769 is about 11204.2745860676. The cubic root of 125535769 is about 500.7133404734.

The spelling of 125535769 in words is "one hundred twenty-five million, five hundred thirty-five thousand, seven hundred sixty-nine".