25431436312 has 96 divisors (see below), whose sum is σ = 51448716000. Its totient is φ = 11780121600.

The previous prime is 25431436307. The next prime is 25431436319. The reversal of 25431436312 is 21363413452.

It is a happy number.

It is a super-2 number, since 2×25431436312² (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 (25431436319) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 42456189 + ... + 42456787.

It is an arithmetic number, because the mean of its divisors is an integer number (535924125).

Almost surely, 2^25431436312 is an apocalyptic number.

It is an amenable number.

25431436312 is an abundant number, since it is smaller than the sum of its proper divisors (26017279688).

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

25431436312 is a wasteful number, since it uses less digits than its factorization.

25431436312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 922 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

Adding to 25431436312 its reverse (21363413452), we get a palindrome (46794849764).

The spelling of 25431436312 in words is "twenty-five billion, four hundred thirty-one million, four hundred thirty-six thousand, three hundred twelve".