25078394880 has 1664 divisors, whose sum is σ = 120781209600. Its totient is φ = 4777574400.

The previous prime is 25078394857. The next prime is 25078394953. The reversal of 25078394880 is 8849387052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 808980465 + ... + 808980495.

Almost surely, 2^25078394880 is an apocalyptic number.

25078394880 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 25078394880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60390604800).

25078394880 is an abundant number, since it is smaller than the sum of its proper divisors (95702814720).

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

25078394880 is a wasteful number, since it uses less digits than its factorization.

25078394880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 25078394880 in words is "twenty-five billion, seventy-eight million, three hundred ninety-four thousand, eight hundred eighty".