125577565 has 8 divisors (see below), whose sum is σ = 151129440. Its totient is φ = 100171152.

The previous prime is 125577563. The next prime is 125577577. The reversal of 125577565 is 565775521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125577565 - 2¹ = 125577563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125577563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34455 + ... + 37924.

It is an arithmetic number, because the mean of its divisors is an integer number (18891180).

Almost surely, 2^125577565 is an apocalyptic number.

It is an amenable number.

125577565 is a deficient number, since it is larger than the sum of its proper divisors (25551875).

125577565 is an equidigital number, since it uses as much as digits as its factorization.

125577565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72731.

The product of its digits is 367500, while the sum is 43.

The square root of 125577565 is about 11206.1396118378. The cubic root of 125577565 is about 500.7689036350.

The spelling of 125577565 in words is "one hundred twenty-five million, five hundred seventy-seven thousand, five hundred sixty-five".