99381725 has 6 divisors (see below), whose sum is σ = 123233370. Its totient is φ = 79505360.

The previous prime is 99381721. The next prime is 99381739. The reversal of 99381725 is 52718399.

It can be written as a sum of positive squares in 3 ways, for example, as 219961 + 99161764 = 469^2 + 9958^2 .

It is not a de Polignac number, because 99381725 - 2² = 99381721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99381721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1987610 + ... + 1987659.

It is an arithmetic number, because the mean of its divisors is an integer number (20538895).

Almost surely, 2^99381725 is an apocalyptic number.

It is an amenable number.

99381725 is a deficient number, since it is larger than the sum of its proper divisors (23851645).

99381725 is a wasteful number, since it uses less digits than its factorization.

99381725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975279 (or 3975274 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 99381725 is about 9969.0383187146. The cubic root of 99381725 is about 463.2003123249.

The spelling of 99381725 in words is "ninety-nine million, three hundred eighty-one thousand, seven hundred twenty-five".