99220725 has 36 divisors (see below), whose sum is σ = 180247392. Its totient is φ = 52164000.

The previous prime is 99220711. The next prime is 99220733. The reversal of 99220725 is 52702299.

It is not a de Polignac number, because 99220725 - 2¹² = 99216629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99220725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12870 + ... + 19080.

It is an arithmetic number, because the mean of its divisors is an integer number (5006872).

Almost surely, 2^99220725 is an apocalyptic number.

It is an amenable number.

99220725 is a deficient number, since it is larger than the sum of its proper divisors (81026667).

99220725 is a wasteful number, since it uses less digits than its factorization.

99220725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6298 (or 6290 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 99220725 is about 9960.9600440921. The cubic root of 99220725 is about 462.9500464683.

The spelling of 99220725 in words is "ninety-nine million, two hundred twenty thousand, seven hundred twenty-five".