25055305040 has 80 divisors (see below), whose sum is σ = 59067886080. Its totient is φ = 9882362880.

The previous prime is 25055304979. The next prime is 25055305081. The reversal of 25055305040 is 4050355052.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 25055304994 and 25055305012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5919725 + ... + 5923955.

It is an arithmetic number, because the mean of its divisors is an integer number (738348576).

Almost surely, 2^25055305040 is an apocalyptic number.

25055305040 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 25055305040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29533943040).

25055305040 is an abundant number, since it is smaller than the sum of its proper divisors (34012581040).

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

25055305040 is a wasteful number, since it uses less digits than its factorization.

25055305040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5260 (or 5254 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 29.

The spelling of 25055305040 in words is "twenty-five billion, fifty-five million, three hundred five thousand, forty".