25223663528 has 32 divisors (see below), whose sum is σ = 54059511360. Its totient is φ = 10808380800.

The previous prime is 25223663473. The next prime is 25223663567. The reversal of 25223663528 is 82536632252.

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, 345428 + ... + 412028.

It is an arithmetic number, because the mean of its divisors is an integer number (1689359730).

Almost surely, 2^25223663528 is an apocalyptic number.

25223663528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25223663528 is an abundant number, since it is smaller than the sum of its proper divisors (28835847832).

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

25223663528 is a wasteful number, since it uses less digits than its factorization.

25223663528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73377 (or 73373 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 44.

The spelling of 25223663528 in words is "twenty-five billion, two hundred twenty-three million, six hundred sixty-three thousand, five hundred twenty-eight".