25431101112 has 32 divisors (see below), whose sum is σ = 63581665680. Its totient is φ = 8476512000.

The previous prime is 25431101099. The next prime is 25431101231. The reversal of 25431101112 is 21110113452.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719862 + ... + 754362.

Almost surely, 2^25431101112 is an apocalyptic number.

It is an amenable number.

25431101112 is an abundant number, since it is smaller than the sum of its proper divisors (38150564568).

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

25431101112 is a wasteful number, since it uses less digits than its factorization.

25431101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65223 (or 65219 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 25431101112 its reverse (21110113452), we get a palindrome (46541214564).

The spelling of 25431101112 in words is "twenty-five billion, four hundred thirty-one million, one hundred one thousand, one hundred twelve".