25331313540 has 96 divisors (see below), whose sum is σ = 76418737920. Its totient is φ = 6232536576.

The previous prime is 25331313517. The next prime is 25331313577. The reversal of 25331313540 is 4531313352.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25331313498 and 25331313507.

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 31 ways as a sum of consecutive naturals, for example, 2058526 + ... + 2070794.

It is an arithmetic number, because the mean of its divisors is an integer number (796028520).

Almost surely, 2^25331313540 is an apocalyptic number.

25331313540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25331313540 is an abundant number, since it is smaller than the sum of its proper divisors (51087424380).

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

25331313540 is a wasteful number, since it uses less digits than its factorization.

25331313540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14941 (or 14939 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 25331313540 its reverse (4531313352), we get a palindrome (29862626892).

The spelling of 25331313540 in words is "twenty-five billion, three hundred thirty-one million, three hundred thirteen thousand, five hundred forty".