25555223135 has 16 divisors (see below), whose sum is σ = 33028554720. Its totient is φ = 18869639040.

The previous prime is 25555223119. The next prime is 25555223143. The reversal of 25555223135 is 53132255552.

It is not a de Polignac number, because 25555223135 - 2⁴ = 25555223119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1172921 + ... + 1194509.

It is an arithmetic number, because the mean of its divisors is an integer number (2064284670).

Almost surely, 2^25555223135 is an apocalyptic number.

25555223135 is a deficient number, since it is larger than the sum of its proper divisors (7473331585).

25555223135 is a wasteful number, since it uses less digits than its factorization.

25555223135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39818.

The product of its digits is 225000, while the sum is 38.

Adding to 25555223135 its reverse (53132255552), we get a palindrome (78687478687).

The spelling of 25555223135 in words is "twenty-five billion, five hundred fifty-five million, two hundred twenty-three thousand, one hundred thirty-five".