25449954068 has 24 divisors (see below), whose sum is σ = 55527173184. Its totient is φ = 9915566400.

The previous prime is 25449954059. The next prime is 25449954077. The reversal of 25449954068 is 86045994452.

It is an interprime number because it is at equal distance from previous prime (25449954059) and next prime (25449954077).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41314553 + ... + 41315168.

It is an arithmetic number, because the mean of its divisors is an integer number (2313632216).

Almost surely, 2^25449954068 is an apocalyptic number.

25449954068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25449954068 is an abundant number, since it is smaller than the sum of its proper divisors (30077219116).

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

25449954068 is a wasteful number, since it uses less digits than its factorization.

25449954068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82629743 (or 82629741 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 56.

The spelling of 25449954068 in words is "twenty-five billion, four hundred forty-nine million, nine hundred fifty-four thousand, sixty-eight".