1155056225 has 12 divisors (see below), whose sum is σ = 1481659260. Its totient is φ = 892180800.

The previous prime is 1155056197. The next prime is 1155056233. The reversal of 1155056225 is 5226505511.

It can be written as a sum of positive squares in 6 ways, for example, as 41899729 + 1113156496 = 6473^2 + 33364^2 .

It is not a de Polignac number, because 1155056225 - 2⁸ = 1155055969 is a prime.

It is a super-2 number, since 2×1155056225² = 2668309765822501250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1155056191 and 1155056200.

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, 795866 + ... + 797315.

It is an arithmetic number, because the mean of its divisors is an integer number (123471605).

Almost surely, 2^1155056225 is an apocalyptic number.

It is an amenable number.

1155056225 is a deficient number, since it is larger than the sum of its proper divisors (326603035).

1155056225 is a wasteful number, since it uses less digits than its factorization.

1155056225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593220 (or 1593215 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 1155056225 is about 33986.1181219627. The cubic root of 1155056225 is about 1049.2227732768. Note that the first 3 decimals are identical.

The spelling of 1155056225 in words is "one billion, one hundred fifty-five million, fifty-six thousand, two hundred twenty-five".