25963794480 has 320 divisors, whose sum is σ = 89393028480. Its totient is φ = 6230016000.

The previous prime is 25963794463. The next prime is 25963794491. The reversal of 25963794480 is 8449736952.

It is a self number, because there is not a number n which added to its sum of digits gives 25963794480.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21617880 + ... + 21619080.

It is an arithmetic number, because the mean of its divisors is an integer number (279353214).

Almost surely, 2^25963794480 is an apocalyptic number.

25963794480 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 25963794480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44696514240).

25963794480 is an abundant number, since it is smaller than the sum of its proper divisors (63429234000).

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

25963794480 is a wasteful number, since it uses less digits than its factorization.

25963794480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 25963794480 in words is "twenty-five billion, nine hundred sixty-three million, seven hundred ninety-four thousand, four hundred eighty".