125728897 has 16 divisors (see below), whose sum is σ = 145521792. Its totient is φ = 106404480.

The previous prime is 125728853. The next prime is 125728913. The reversal of 125728897 is 798827521.

It is a de Polignac number, because none of the positive numbers 2^k-125728897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125728897.

It is not an unprimeable number, because it can be changed into a prime (125728397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255822 + ... + 256312.

It is an arithmetic number, because the mean of its divisors is an integer number (9095112).

Almost surely, 2^125728897 is an apocalyptic number.

It is an amenable number.

125728897 is a deficient number, since it is larger than the sum of its proper divisors (19792895).

125728897 is a wasteful number, since it uses less digits than its factorization.

125728897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888.

The product of its digits is 564480, while the sum is 49.

The square root of 125728897 is about 11212.8897702599. The cubic root of 125728897 is about 500.9699797285.

The spelling of 125728897 in words is "one hundred twenty-five million, seven hundred twenty-eight thousand, eight hundred ninety-seven".