25230232144 has 20 divisors (see below), whose sum is σ = 52643850196. Its totient is φ = 11644722432.

The previous prime is 25230232141. The next prime is 25230232163. The reversal of 25230232144 is 44123203252.

It can be written as a sum of positive squares in 2 ways, for example, as 2099472400 + 23130759744 = 45820^2 + 152088^2 .

It is a super-2 number, since 2×25230232144² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25230232141) 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, 60649389 + ... + 60649804.

Almost surely, 2^25230232144 is an apocalyptic number.

It is an amenable number.

25230232144 is an abundant number, since it is smaller than the sum of its proper divisors (27413618052).

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

25230232144 is a wasteful number, since it uses less digits than its factorization.

25230232144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121299214 (or 121299208 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 25230232144 its reverse (44123203252), we get a palindrome (69353435396).

The spelling of 25230232144 in words is "twenty-five billion, two hundred thirty million, two hundred thirty-two thousand, one hundred forty-four".