1211035225 has 12 divisors (see below), whose sum is σ = 1503346240. Its totient is φ = 967755600.

The previous prime is 1211035223. The next prime is 1211035237. The reversal of 1211035225 is 5225301121.

It is not a de Polignac number, because 1211035225 - 2¹ = 1211035223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211035196 and 1211035205.

It is not an unprimeable number, because it can be changed into a prime (1211035223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3381 + ... + 49330.

Almost surely, 2^1211035225 is an apocalyptic number.

It is an amenable number.

1211035225 is a deficient number, since it is larger than the sum of its proper divisors (292311015).

1211035225 is an equidigital number, since it uses as much as digits as its factorization.

1211035225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53640 (or 53635 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1211035225 is about 34799.9313936105. The cubic root of 1211035225 is about 1065.9060449279.

Adding to 1211035225 its reverse (5225301121), we get a palindrome (6436336346).

The spelling of 1211035225 in words is "one billion, two hundred eleven million, thirty-five thousand, two hundred twenty-five".