25434433344 has 112 divisors (see below), whose sum is σ = 70286636160. Its totient is φ = 8101969920.

The previous prime is 25434433333. The next prime is 25434433421. The reversal of 25434433344 is 44333443452.

It is a congruent number.

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, 6538152 + ... + 6542040.

Almost surely, 2^25434433344 is an apocalyptic number.

25434433344 is a gapful number since it is divisible by the number (24) 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 25434433344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35143318080).

25434433344 is an abundant number, since it is smaller than the sum of its proper divisors (44852202816).

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

25434433344 is a wasteful number, since it uses less digits than its factorization.

25434433344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5408 (or 5398 counting only the distinct ones).

The product of its digits is 829440, while the sum is 39.

Adding to 25434433344 its reverse (44333443452), we get a palindrome (69767876796).

The spelling of 25434433344 in words is "twenty-five billion, four hundred thirty-four million, four hundred thirty-three thousand, three hundred forty-four".