99431025 has 24 divisors (see below), whose sum is σ = 168840384. Its totient is φ = 51595200.

The previous prime is 99430997. The next prime is 99431041. The reversal of 99431025 is 52013499.

It is not a de Polignac number, because 99431025 - 2¹³ = 99422833 is a prime.

It is a Curzon 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, 15141 + ... + 20690.

It is an arithmetic number, because the mean of its divisors is an integer number (7035016).

Almost surely, 2^99431025 is an apocalyptic number.

It is an amenable number.

99431025 is a deficient number, since it is larger than the sum of its proper divisors (69409359).

99431025 is a wasteful number, since it uses less digits than its factorization.

99431025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35881 (or 35876 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 99431025 is about 9971.5106678978. The cubic root of 99431025 is about 463.2768924688.

The spelling of 99431025 in words is "ninety-nine million, four hundred thirty-one thousand, twenty-five".