25378444487352 has 128 divisors (see below), whose sum is σ = 71450653132800. Its totient is φ = 7441941811200.

The previous prime is 25378444487323. The next prime is 25378444487411.

25378444487352 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 165051724 + ... + 165205412.

It is an arithmetic number, because the mean of its divisors is an integer number (558208227600).

Almost surely, 2^{25378444487352} is an apocalyptic number.

25378444487352 is a gapful number since it is divisible by the number (22) 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 25378444487352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35725326566400).

25378444487352 is an abundant number, since it is smaller than the sum of its proper divisors (46072208645448).

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

25378444487352 is a wasteful number, since it uses less digits than its factorization.

25378444487352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173917 (or 173913 counting only the distinct ones).

The product of its digits is 722534400, while the sum is 66.

The spelling of 25378444487352 in words is "twenty-five trillion, three hundred seventy-eight billion, four hundred forty-four million, four hundred eighty-seven thousand, three hundred fifty-two".