25144131344 has 20 divisors (see below), whose sum is σ = 48872408796. Its totient is φ = 12531896832.

The previous prime is 25144131343. The next prime is 25144131347. The reversal of 25144131344 is 44313144152.

It can be written as a sum of positive squares in 2 ways, for example, as 4462240000 + 20681891344 = 66800^2 + 143812^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25144131344.

It is not an unprimeable number, because it can be changed into a prime (25144131343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505389 + ... + 2515404.

Almost surely, 2^25144131344 is an apocalyptic number.

It is an amenable number.

25144131344 is a deficient number, since it is larger than the sum of its proper divisors (23728277452).

25144131344 is a wasteful number, since it uses less digits than its factorization.

25144131344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021114 (or 5021108 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

Adding to 25144131344 its reverse (44313144152), we get a palindrome (69457275496).

The spelling of 25144131344 in words is "twenty-five billion, one hundred forty-four million, one hundred thirty-one thousand, three hundred forty-four".