25243144132 has 24 divisors (see below), whose sum is σ = 45635179520. Its totient is φ = 12205140480.

The previous prime is 25243144099. The next prime is 25243144141. The reversal of 25243144132 is 23144134252.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 25243144094 and 25243144103.

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 7 ways as a sum of consecutive naturals, for example, 87844 + ... + 241252.

Almost surely, 2^25243144132 is an apocalyptic number.

It is an amenable number.

25243144132 is a deficient number, since it is larger than the sum of its proper divisors (20392035388).

25243144132 is a wasteful number, since it uses less digits than its factorization.

25243144132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154771 (or 154769 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

Adding to 25243144132 its reverse (23144134252), we get a palindrome (48387278384).

The spelling of 25243144132 in words is "twenty-five billion, two hundred forty-three million, one hundred forty-four thousand, one hundred thirty-two".