25780959040 has 224 divisors, whose sum is σ = 64824376320. Its totient is φ = 9754214400.

The previous prime is 25780959037. The next prime is 25780959067. The reversal of 25780959040 is 4095908752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122184535 + ... + 122184745.

Almost surely, 2^25780959040 is an apocalyptic number.

25780959040 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 25780959040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32412188160).

25780959040 is an abundant number, since it is smaller than the sum of its proper divisors (39043417280).

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

25780959040 is a wasteful number, since it uses less digits than its factorization.

25780959040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 25780959040 in words is "twenty-five billion, seven hundred eighty million, nine hundred fifty-nine thousand, forty".