99002500 has 45 divisors (see below), whose sum is σ = 217592067. Its totient is φ = 39402000.

The previous prime is 99002479. The next prime is 99002503. The reversal of 99002500 is 520099.

The square root of 99002500 is 9950.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 7761796 + 91240704 = 2786^2 + 9552^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99002503) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 497401 + ... + 497599.

Almost surely, 2^99002500 is an apocalyptic number.

99002500 is the 9950-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99002500

99002500 is an abundant number, since it is smaller than the sum of its proper divisors (118589567).

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

99002500 is an equidigital number, since it uses as much as digits as its factorization.

99002500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The cubic root of 99002500 is about 462.6103948796.

Multiplying 99002500 by its sum of digits (25), we get a square (2475062500 = 49750²).

99002500 divided by its sum of digits (25) gives a square (3960100 = 1990²).

Adding to 99002500 its reverse (520099), we get a palindrome (99522599).

The spelling of 99002500 in words is "ninety-nine million, two thousand, five hundred".