25454252099 has 16 divisors (see below), whose sum is σ = 29093152320. Its totient is φ = 22125143040.

The previous prime is 25454252077. The next prime is 25454252119. The reversal of 25454252099 is 99025245452.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25454252099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25454252039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1111082 + ... + 1133759.

It is an arithmetic number, because the mean of its divisors is an integer number (1818322020).

Almost surely, 2^25454252099 is an apocalyptic number.

25454252099 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

25454252099 is a deficient number, since it is larger than the sum of its proper divisors (3638900221).

25454252099 is a wasteful number, since it uses less digits than its factorization.

25454252099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244910.

The product of its (nonzero) digits is 1296000, while the sum is 47.

The spelling of 25454252099 in words is "twenty-five billion, four hundred fifty-four million, two hundred fifty-two thousand, ninety-nine".