1211062225 has 6 divisors (see below), whose sum is σ = 1501717190. Its totient is φ = 968849760.

The previous prime is 1211062211. The next prime is 1211062241. The reversal of 1211062225 is 5222601121.

It can be written as a sum of positive squares in 3 ways, for example, as 40806544 + 1170255681 = 6388^2 + 34209^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1211062225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211062196 and 1211062205.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24221220 + ... + 24221269.

Almost surely, 2^1211062225 is an apocalyptic number.

It is an amenable number.

1211062225 is a deficient number, since it is larger than the sum of its proper divisors (290654965).

1211062225 is an equidigital number, since it uses as much as digits as its factorization.

1211062225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48442499 (or 48442494 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1211062225 is about 34800.3193232476. The cubic root of 1211062225 is about 1065.9139663186.

Adding to 1211062225 its reverse (5222601121), we get a palindrome (6433663346).

The spelling of 1211062225 in words is "one billion, two hundred eleven million, sixty-two thousand, two hundred twenty-five".