25540055299 has 4 divisors (see below), whose sum is σ = 27861878520. Its totient is φ = 23218232080.

The previous prime is 25540055293. The next prime is 25540055309. The reversal of 25540055299 is 99255004552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25540055299 - 2⁷ = 25540055171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25540055293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1160911594 + ... + 1160911615.

It is an arithmetic number, because the mean of its divisors is an integer number (6965469630).

Almost surely, 2^25540055299 is an apocalyptic number.

25540055299 is a deficient number, since it is larger than the sum of its proper divisors (2321823221).

25540055299 is a wasteful number, since it uses less digits than its factorization.

25540055299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321823220.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 25540055299 in words is "twenty-five billion, five hundred forty million, fifty-five thousand, two hundred ninety-nine".