25493077248 has 72 divisors (see below), whose sum is σ = 67890462528. Its totient is φ = 8492470272.

The previous prime is 25493077193. The next prime is 25493077273. The reversal of 25493077248 is 84277039452.

It is a self number, because there is not a number n which added to its sum of digits gives 25493077248.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1360036 + ... + 1378652.

Almost surely, 2^25493077248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25493077248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33945231264).

25493077248 is an abundant number, since it is smaller than the sum of its proper divisors (42397385280).

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

25493077248 is a wasteful number, since it uses less digits than its factorization.

25493077248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20419 (or 20405 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 25493077248 in words is "twenty-five billion, four hundred ninety-three million, seventy-seven thousand, two hundred forty-eight".