99425520 has 120 divisors (see below), whose sum is σ = 353588976. Its totient is φ = 24950784.

The previous prime is 99425519. The next prime is 99425567. The reversal of 99425520 is 2552499.

It is a happy number.

99425520 is a `hidden beast` number, since 99 + 42 + 5 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8179 + ... + 16301.

Almost surely, 2^99425520 is an apocalyptic number.

99425520 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99425520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176794488).

99425520 is an abundant number, since it is smaller than the sum of its proper divisors (254163456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99425520 is a wasteful number, since it uses less digits than its factorization.

99425520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8159 (or 8150 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 99425520 is about 9971.2346276677. The cubic root of 99425520 is about 463.2683425339.

The spelling of 99425520 in words is "ninety-nine million, four hundred twenty-five thousand, five hundred twenty".