25220663296 has 48 divisors (see below), whose sum is σ = 50570956800. Its totient is φ = 12574838784.

The previous prime is 25220663269. The next prime is 25220663323. The reversal of 25220663296 is 69236602252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25220663269) and next prime (25220663323).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718081 + ... + 752383.

It is an arithmetic number, because the mean of its divisors is an integer number (1053561600).

Almost surely, 2^25220663296 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 25220663296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25285478400).

25220663296 is an abundant number, since it is smaller than the sum of its proper divisors (25350293504).

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

25220663296 is an equidigital number, since it uses as much as digits as its factorization.

25220663296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34684 (or 34664 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 25220663296 in words is "twenty-five billion, two hundred twenty million, six hundred sixty-three thousand, two hundred ninety-six".