25555583081 has 8 divisors (see below), whose sum is σ = 30924403200. Its totient is φ = 20616268608.

The previous prime is 25555583077. The next prime is 25555583093. The reversal of 25555583081 is 18038555552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25555583081 - 2² = 25555583077 is a prime.

It is a super-2 number, since 2×25555583081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25555583051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107376281 + ... + 107376518.

It is an arithmetic number, because the mean of its divisors is an integer number (3865550400).

Almost surely, 2^25555583081 is an apocalyptic number.

It is an amenable number.

25555583081 is a deficient number, since it is larger than the sum of its proper divisors (5368820119).

25555583081 is a wasteful number, since it uses less digits than its factorization.

25555583081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214752823.

The product of its (nonzero) digits is 1200000, while the sum is 47.

The spelling of 25555583081 in words is "twenty-five billion, five hundred fifty-five million, five hundred eighty-three thousand, eighty-one".