25189555254 has 16 divisors (see below), whose sum is σ = 53030642880. Its totient is φ = 7954596360.

The previous prime is 25189555253. The next prime is 25189555301. The reversal of 25189555254 is 45255598152.

It is a junction number, because it is equal to n+sod(n) for n = 25189555197 and 25189555206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25189555253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110480392 + ... + 110480619.

It is an arithmetic number, because the mean of its divisors is an integer number (3314415180).

Almost surely, 2^25189555254 is an apocalyptic number.

25189555254 is an abundant number, since it is smaller than the sum of its proper divisors (27841087626).

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

25189555254 is a wasteful number, since it uses less digits than its factorization.

25189555254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220961035.

The product of its digits is 3600000, while the sum is 51.

The spelling of 25189555254 in words is "twenty-five billion, one hundred eighty-nine million, five hundred fifty-five thousand, two hundred fifty-four".