25453588940 has 96 divisors (see below), whose sum is σ = 60507457920. Its totient is φ = 8923723776.

The previous prime is 25453588933. The next prime is 25453588949. The reversal of 25453588940 is 4988535452.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25453588949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 803726 + ... + 834794.

It is an arithmetic number, because the mean of its divisors is an integer number (630286020).

Almost surely, 2^25453588940 is an apocalyptic number.

25453588940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25453588940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30253728960).

25453588940 is an abundant number, since it is smaller than the sum of its proper divisors (35053868980).

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

25453588940 is a wasteful number, since it uses less digits than its factorization.

25453588940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31251 (or 31249 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 53.

The spelling of 25453588940 in words is "twenty-five billion, four hundred fifty-three million, five hundred eighty-eight thousand, nine hundred forty".