1761211225 has 12 divisors (see below), whose sum is σ = 2196984384. Its totient is φ = 1400528720.

The previous prime is 1761211201. The next prime is 1761211241. The reversal of 1761211225 is 5221121671.

It is not a de Polignac number, because 1761211225 - 2¹³ = 1761203033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1761211193 and 1761211202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206749 + ... + 215098.

It is an arithmetic number, because the mean of its divisors is an integer number (183082032).

Almost surely, 2^1761211225 is an apocalyptic number.

It is an amenable number.

1761211225 is a deficient number, since it is larger than the sum of its proper divisors (435773159).

1761211225 is a wasteful number, since it uses less digits than its factorization.

1761211225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422024 (or 422019 counting only the distinct ones).

The product of its digits is 1680, while the sum is 28.

The square root of 1761211225 is about 41966.7871655670. The cubic root of 1761211225 is about 1207.6390511238.

Adding to 1761211225 its reverse (5221121671), we get a palindrome (6982332896).

The spelling of 1761211225 in words is "one billion, seven hundred sixty-one million, two hundred eleven thousand, two hundred twenty-five".