25481788312 has 32 divisors (see below), whose sum is σ = 48975670800. Its totient is φ = 12422016000.

The previous prime is 25481788187. The next prime is 25481788313. The reversal of 25481788312 is 21388718452.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25481788313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493312 + ... + 542512.

Almost surely, 2^25481788312 is an apocalyptic number.

It is an amenable number.

25481788312 is a deficient number, since it is larger than the sum of its proper divisors (23493882488).

25481788312 is a wasteful number, since it uses less digits than its factorization.

25481788312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50827 (or 50823 counting only the distinct ones).

The product of its digits is 860160, while the sum is 49.

The spelling of 25481788312 in words is "twenty-five billion, four hundred eighty-one million, seven hundred eighty-eight thousand, three hundred twelve".