25051640000 has 140 divisors (see below), whose sum is σ = 63001995408. Its totient is φ = 9878400000.

The previous prime is 25051639981. The next prime is 25051640021. The reversal of 25051640000 is 4615052.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2835590 + ... + 2844410.

Almost surely, 2^25051640000 is an apocalyptic number.

25051640000 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 25051640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31500997704).

25051640000 is an abundant number, since it is smaller than the sum of its proper divisors (37950355408).

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

25051640000 is an frugal number, since it uses more digits than its factorization.

25051640000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8924 (or 8899 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 25051640000 in words is "twenty-five billion, fifty-one million, six hundred forty thousand".