25425314244 has 108 divisors (see below), whose sum is σ = 70780522540. Its totient is φ = 7689686400.

The previous prime is 25425314231. The next prime is 25425314263. The reversal of 25425314244 is 44241352452.

25425314244 is a `hidden beast` number, since 2 + 5 + 42 + 531 + 42 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10805602500 + 14619711744 = 103950^2 + 120912^2 .

It is a super-2 number, since 2×25425314244² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25425314199 and 25425314208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2351202 + ... + 2361990.

Almost surely, 2^25425314244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25425314244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35390261270).

25425314244 is an abundant number, since it is smaller than the sum of its proper divisors (45355208296).

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

25425314244 is a wasteful number, since it uses less digits than its factorization.

25425314244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11362 (or 11346 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

Adding to 25425314244 its reverse (44241352452), we get a palindrome (69666666696).

The spelling of 25425314244 in words is "twenty-five billion, four hundred twenty-five million, three hundred fourteen thousand, two hundred forty-four".