25288894380 has 48 divisors (see below), whose sum is σ = 71144527104. Its totient is φ = 6711741120.

The previous prime is 25288894363. The next prime is 25288894451. The reversal of 25288894380 is 8349888252.

It is a self number, because there is not a number n which added to its sum of digits gives 25288894380.

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, 986112 + ... + 1011431.

It is an arithmetic number, because the mean of its divisors is an integer number (1482177648).

Almost surely, 2^25288894380 is an apocalyptic number.

25288894380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25288894380 is an abundant number, since it is smaller than the sum of its proper divisors (45855632724).

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

25288894380 is a wasteful number, since it uses less digits than its factorization.

25288894380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997766 (or 1997764 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 57.

The spelling of 25288894380 in words is "twenty-five billion, two hundred eighty-eight million, eight hundred ninety-four thousand, three hundred eighty".