25481238340 has 24 divisors (see below), whose sum is σ = 53734504320. Its totient is φ = 10149847008.

The previous prime is 25481238323. The next prime is 25481238421. The reversal of 25481238340 is 4383218452.

It is a junction number, because it is equal to n+sod(n) for n = 25481238293 and 25481238302.

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, 2660622 + ... + 2670181.

It is an arithmetic number, because the mean of its divisors is an integer number (2238937680).

Almost surely, 2^25481238340 is an apocalyptic number.

25481238340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25481238340 is an abundant number, since it is smaller than the sum of its proper divisors (28253265980).

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

25481238340 is a wasteful number, since it uses less digits than its factorization.

25481238340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5331051 (or 5331049 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 25481238340 in words is "twenty-five billion, four hundred eighty-one million, two hundred thirty-eight thousand, three hundred forty".