25288463380 has 12 divisors (see below), whose sum is σ = 53105773140. Its totient is φ = 10115385344.

The previous prime is 25288463377. The next prime is 25288463401. The reversal of 25288463380 is 8336488252.

It can be written as a sum of positive squares in 2 ways, for example, as 19657161616 + 5631301764 = 140204^2 + 75042^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632211565 + ... + 632211604.

It is an arithmetic number, because the mean of its divisors is an integer number (4425481095).

Almost surely, 2^25288463380 is an apocalyptic number.

25288463380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25288463380 is an abundant number, since it is smaller than the sum of its proper divisors (27817309760).

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

25288463380 is a wasteful number, since it uses less digits than its factorization.

25288463380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264423178 (or 1264423176 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 25288463380 in words is "twenty-five billion, two hundred eighty-eight million, four hundred sixty-three thousand, three hundred eighty".