25280099 has 8 divisors (see below), whose sum is σ = 27739152. Its totient is φ = 22894560.

The previous prime is 25280081. The next prime is 25280113. The reversal of 25280099 is 99008252.

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

It is not a de Polignac number, because 25280099 - 2²⁰ = 24231523 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (25280009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17657 + ... + 19034.

It is an arithmetic number, because the mean of its divisors is an integer number (3467394).

Almost surely, 2^25280099 is an apocalyptic number.

25280099 is a deficient number, since it is larger than the sum of its proper divisors (2459053).

25280099 is a wasteful number, since it uses less digits than its factorization.

25280099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36757.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 25280099 is about 5027.9318810024. The cubic root of 25280099 is about 293.4897399643.

The spelling of 25280099 in words is "twenty-five million, two hundred eighty thousand, ninety-nine".