22055511232225 has 48 divisors (see below), whose sum is σ = 27995270688000. Its totient is φ = 17231632588800.

The previous prime is 22055511232207. The next prime is 22055511232229. The reversal of 22055511232225 is 52223211555022.

It is not a de Polignac number, because 22055511232225 - 2²³ = 22055502843617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22055511232229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148338721 + ... + 148487329.

It is an arithmetic number, because the mean of its divisors is an integer number (583234806000).

Almost surely, 2^{22055511232225} is an apocalyptic number.

22055511232225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22055511232225 is a deficient number, since it is larger than the sum of its proper divisors (5939759455775).

22055511232225 is a wasteful number, since it uses less digits than its factorization.

22055511232225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149338 (or 149333 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 22055511232225 its reverse (52223211555022), we get a palindrome (74278722787247).

The spelling of 22055511232225 in words is "twenty-two trillion, fifty-five billion, five hundred eleven million, two hundred thirty-two thousand, two hundred twenty-five".