125577775 has 6 divisors (see below), whose sum is σ = 155716472. Its totient is φ = 100462200.

The previous prime is 125577773. The next prime is 125577787. The reversal of 125577775 is 577775521.

It is not a de Polignac number, because 125577775 - 2¹ = 125577773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125577773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2511531 + ... + 2511580.

Almost surely, 2^125577775 is an apocalyptic number.

125577775 is a deficient number, since it is larger than the sum of its proper divisors (30138697).

125577775 is an equidigital number, since it uses as much as digits as its factorization.

125577775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5023121 (or 5023116 counting only the distinct ones).

The product of its digits is 600250, while the sum is 46.

The square root of 125577775 is about 11206.1489816975. The cubic root of 125577775 is about 500.7691827756.

The spelling of 125577775 in words is "one hundred twenty-five million, five hundred seventy-seven thousand, seven hundred seventy-five".