99725566 has 8 divisors (see below), whose sum is σ = 157461480. Its totient is φ = 47238408.

The previous prime is 99725531. The next prime is 99725567. The reversal of 99725566 is 66552799.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99725567) 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 3 ways as a sum of consecutive naturals, for example, 1312141 + ... + 1312216.

It is an arithmetic number, because the mean of its divisors is an integer number (19682685).

Almost surely, 2^99725566 is an apocalyptic number.

99725566 is a deficient number, since it is larger than the sum of its proper divisors (57735914).

99725566 is a wasteful number, since it uses less digits than its factorization.

99725566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624378.

The product of its digits is 1020600, while the sum is 49.

The square root of 99725566 is about 9986.2688728073. The cubic root of 99725566 is about 463.7338910861.

The spelling of 99725566 in words is "ninety-nine million, seven hundred twenty-five thousand, five hundred sixty-six".