25505990092 has 24 divisors (see below), whose sum is σ = 48732913152. Its totient is φ = 11584189200.

The previous prime is 25505990057. The next prime is 25505990119. The reversal of 25505990092 is 29009950552.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181288 + ... + 289615.

It is an arithmetic number, because the mean of its divisors is an integer number (2030538048).

Almost surely, 2^25505990092 is an apocalyptic number.

25505990092 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25505990092 is a deficient number, since it is larger than the sum of its proper divisors (23226923060).

25505990092 is a wasteful number, since it uses less digits than its factorization.

25505990092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472149 (or 472147 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 46.

The spelling of 25505990092 in words is "twenty-five billion, five hundred five million, nine hundred ninety thousand, ninety-two".