22155545113225 has 12 divisors (see below), whose sum is σ = 27603079150480. Its totient is φ = 17640434019600.

The previous prime is 22155545113189. The next prime is 22155545113249. The reversal of 22155545113225 is 52231154555122.

It is a de Polignac number, because none of the positive numbers 2^k-22155545113225 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2100046395 + ... + 2100056944.

Almost surely, 2^{22155545113225} is an apocalyptic number.

22155545113225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22155545113225 is a deficient number, since it is larger than the sum of its proper divisors (5447534037255).

22155545113225 is a wasteful number, since it uses less digits than its factorization.

22155545113225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4200103560 (or 4200103555 counting only the distinct ones).

The product of its digits is 600000, while the sum is 43.

Adding to 22155545113225 its reverse (52231154555122), we get a palindrome (74386699668347).

The spelling of 22155545113225 in words is "twenty-two trillion, one hundred fifty-five billion, five hundred forty-five million, one hundred thirteen thousand, two hundred twenty-five".