99625881 has 8 divisors (see below), whose sum is σ = 134076384. Its totient is φ = 65796320.

The previous prime is 99625879. The next prime is 99625901. The reversal of 99625881 is 18852699.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 99625881 - 2¹ = 99625879 is a prime.

It is a super-2 number, since 2×99625881² = 19850632330052322, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99625881.

It is not an unprimeable number, because it can be changed into a prime (99625381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154860 + ... + 155501.

It is an arithmetic number, because the mean of its divisors is an integer number (16759548).

Almost surely, 2^99625881 is an apocalyptic number.

It is an amenable number.

99625881 is a deficient number, since it is larger than the sum of its proper divisors (34450503).

99625881 is a wasteful number, since it uses less digits than its factorization.

99625881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310471.

The product of its digits is 311040, while the sum is 48.

The square root of 99625881 is about 9981.2765215678. The cubic root of 99625881 is about 463.5793244884.

The spelling of 99625881 in words is "ninety-nine million, six hundred twenty-five thousand, eight hundred eighty-one".