25222201000000 has 196 divisors, whose sum is σ = 62617153724548. Its totient is φ = 10080000000000.

The previous prime is 25222200999991. The next prime is 25222201000067. The reversal of 25222201000000 is 10222252.

It can be written as a sum of positive squares in 14 ways, for example, as 8551834619904 + 16670366380096 = 2924352^2 + 4082936^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1200989500 + ... + 1201010500.

Almost surely, 2^{25222201000000} is an apocalyptic number.

25222201000000 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 25222201000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31308576862274).

25222201000000 is an abundant number, since it is smaller than the sum of its proper divisors (37394952724548).

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

25222201000000 is an frugal number, since it uses more digits than its factorization.

25222201000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22244 (or 22209 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

Adding to 25222201000000 its reverse (10222252), we get a palindrome (25222211222252).

The spelling of 25222201000000 in words is "twenty-five trillion, two hundred twenty-two billion, two hundred one million", and thus it is an aban number.