99925554 has 16 divisors (see below), whose sum is σ = 200187648. Its totient is φ = 33252432.

The previous prime is 99925549. The next prime is 99925577. The reversal of 99925554 is 45552999.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10077 + ... + 17360.

It is an arithmetic number, because the mean of its divisors is an integer number (12511728).

Almost surely, 2^99925554 is an apocalyptic number.

99925554 is an abundant number, since it is smaller than the sum of its proper divisors (100262094).

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

99925554 is a wasteful number, since it uses less digits than its factorization.

99925554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28049.

The product of its digits is 729000, while the sum is 48.

The square root of 99925554 is about 9996.2770069661. The cubic root of 99925554 is about 464.0436721924.

The spelling of 99925554 in words is "ninety-nine million, nine hundred twenty-five thousand, five hundred fifty-four".