25031112140 has 24 divisors (see below), whose sum is σ = 52570289520. Its totient is φ = 10011501248.

The previous prime is 25031112023. The next prime is 25031112143. The reversal of 25031112140 is 4121113052.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (25031112143) 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, 182699 + ... + 288861.

It is an arithmetic number, because the mean of its divisors is an integer number (2190428730).

Almost surely, 2^25031112140 is an apocalyptic number.

25031112140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25031112140 is an abundant number, since it is smaller than the sum of its proper divisors (27539177380).

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

25031112140 is a wasteful number, since it uses less digits than its factorization.

25031112140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117961 (or 117959 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 25031112140 its reverse (4121113052), we get a palindrome (29152225192).

The spelling of 25031112140 in words is "twenty-five billion, thirty-one million, one hundred twelve thousand, one hundred forty".