25536863552 has 56 divisors (see below), whose sum is σ = 52538741760. Its totient is φ = 12302369280.

The previous prime is 25536863543. The next prime is 25536863603.

It is a happy number.

25536863552 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25536863552.

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, 426233 + ... + 482439.

Almost surely, 2^25536863552 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 25536863552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26269370880).

25536863552 is an abundant number, since it is smaller than the sum of its proper divisors (27001878208).

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

25536863552 is a wasteful number, since it uses less digits than its factorization.

25536863552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56479 (or 56469 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 50.

The spelling of 25536863552 in words is "twenty-five billion, five hundred thirty-six million, eight hundred sixty-three thousand, five hundred fifty-two".