25775263528 has 64 divisors (see below), whose sum is σ = 56762697600. Its totient is φ = 10740936960.

The previous prime is 25775263511. The next prime is 25775263603. The reversal of 25775263528 is 82536257752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4201023 + ... + 4207153.

It is an arithmetic number, because the mean of its divisors is an integer number (886917150).

Almost surely, 2^25775263528 is an apocalyptic number.

25775263528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25775263528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28381348800).

25775263528 is an abundant number, since it is smaller than the sum of its proper divisors (30987434072).

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

25775263528 is a wasteful number, since it uses less digits than its factorization.

25775263528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8210 (or 8206 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 52.

The spelling of 25775263528 in words is "twenty-five billion, seven hundred seventy-five million, two hundred sixty-three thousand, five hundred twenty-eight".