25440140013424 has 40 divisors (see below), whose sum is σ = 49339283425520. Its totient is φ = 12707425152000.

The previous prime is 25440140013419. The next prime is 25440140013467. The reversal of 25440140013424 is 42431004104452.

It is a self number, because there is not a number n which added to its sum of digits gives 25440140013424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122475094 + ... + 122682634.

It is an arithmetic number, because the mean of its divisors is an integer number (1233482085638).

Almost surely, 2^{25440140013424} is an apocalyptic number.

It is an amenable number.

25440140013424 is a deficient number, since it is larger than the sum of its proper divisors (23899143412096).

25440140013424 is a wasteful number, since it uses less digits than its factorization.

25440140013424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215129 (or 215123 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 25440140013424 its reverse (42431004104452), we get a palindrome (67871144117876).

The spelling of 25440140013424 in words is "twenty-five trillion, four hundred forty billion, one hundred forty million, thirteen thousand, four hundred twenty-four".