25455254136 has 128 divisors (see below), whose sum is σ = 71261467200. Its totient is φ = 7523389440.

The previous prime is 25455254093. The next prime is 25455254183. The reversal of 25455254136 is 63145255452.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1775316 + ... + 1789596.

Almost surely, 2^25455254136 is an apocalyptic number.

25455254136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25455254136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35630733600).

25455254136 is an abundant number, since it is smaller than the sum of its proper divisors (45806213064).

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

25455254136 is a wasteful number, since it uses less digits than its factorization.

25455254136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14529 (or 14525 counting only the distinct ones).

The product of its digits is 720000, while the sum is 42.

The spelling of 25455254136 in words is "twenty-five billion, four hundred fifty-five million, two hundred fifty-four thousand, one hundred thirty-six".