125198565 has 16 divisors (see below), whose sum is σ = 205732608. Its totient is φ = 64967616.

The previous prime is 125198537. The next prime is 125198587. The reversal of 125198565 is 565891521.

It is a happy number.

It is not a de Polignac number, because 125198565 - 2⁸ = 125198309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112237 + ... + 113346.

It is an arithmetic number, because the mean of its divisors is an integer number (12858288).

Almost surely, 2^125198565 is an apocalyptic number.

125198565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125198565 is a deficient number, since it is larger than the sum of its proper divisors (80534043).

125198565 is a wasteful number, since it uses less digits than its factorization.

125198565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225628.

The product of its digits is 108000, while the sum is 42.

The square root of 125198565 is about 11189.2164605034. The cubic root of 125198565 is about 500.2646132683.

The spelling of 125198565 in words is "one hundred twenty-five million, one hundred ninety-eight thousand, five hundred sixty-five".