99012505 has 8 divisors (see below), whose sum is σ = 125804232. Its totient is φ = 74550528.

The previous prime is 99012497. The next prime is 99012509. The reversal of 99012505 is 50521099.

It can be written as a sum of positive squares in 4 ways, for example, as 33143049 + 65869456 = 5757^2 + 8116^2 .

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 99012505 - 2³ = 99012497 is a prime.

It is a super-2 number, since 2×99012505² = 19606952292750050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99012509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582342 + ... + 582511.

It is an arithmetic number, because the mean of its divisors is an integer number (15725529).

Almost surely, 2^99012505 is an apocalyptic number.

It is an amenable number.

99012505 is a deficient number, since it is larger than the sum of its proper divisors (26791727).

99012505 is a wasteful number, since it uses less digits than its factorization.

99012505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164875.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 99012505 is about 9950.5027511177. The cubic root of 99012505 is about 462.6259778568.

The spelling of 99012505 in words is "ninety-nine million, twelve thousand, five hundred five".