25602222000 has 160 divisors (see below), whose sum is σ = 82972992960. Its totient is φ = 6791577600.

The previous prime is 25602221993. The next prime is 25602222007. The reversal of 25602222000 is 22220652.

It is an interprime number because it is at equal distance from previous prime (25602221993) and next prime (25602222007).

It is not an unprimeable number, because it can be changed into a prime (25602222007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1146946 + ... + 1169054.

It is an arithmetic number, because the mean of its divisors is an integer number (518581206).

Almost surely, 2^25602222000 is an apocalyptic number.

25602222000 is a gapful number since it is divisible by the number (20) 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 25602222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41486496480).

25602222000 is an abundant number, since it is smaller than the sum of its proper divisors (57370770960).

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

25602222000 is a wasteful number, since it uses less digits than its factorization.

25602222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22328 (or 22312 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 25602222000 its reverse (22220652), we get a palindrome (25624442652).

The spelling of 25602222000 in words is "twenty-five billion, six hundred two million, two hundred twenty-two thousand".