125594561 has 4 divisors (see below), whose sum is σ = 125617152. Its totient is φ = 125571972.

The previous prime is 125594549. The next prime is 125594591. The reversal of 125594561 is 165495521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125594561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125594501) 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, 3536 + ... + 16238.

It is an arithmetic number, because the mean of its divisors is an integer number (31404288).

Almost surely, 2^125594561 is an apocalyptic number.

It is an amenable number.

125594561 is a deficient number, since it is larger than the sum of its proper divisors (22591).

125594561 is an equidigital number, since it uses as much as digits as its factorization.

125594561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22590.

The product of its digits is 54000, while the sum is 38.

The square root of 125594561 is about 11206.8979204774. The cubic root of 125594561 is about 500.7914944121.

The spelling of 125594561 in words is "one hundred twenty-five million, five hundred ninety-four thousand, five hundred sixty-one".