1225717611 has 8 divisors (see below), whose sum is σ = 1678460304. Its totient is φ = 795060000.

The previous prime is 1225717601. The next prime is 1225717637. The reversal of 1225717611 is 1167175221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225717611 - 2⁵ = 1225717579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225717601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5521140 + ... + 5521361.

It is an arithmetic number, because the mean of its divisors is an integer number (209807538).

Almost surely, 2^1225717611 is an apocalyptic number.

1225717611 is a deficient number, since it is larger than the sum of its proper divisors (452742693).

1225717611 is a wasteful number, since it uses less digits than its factorization.

1225717611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11042541.

The product of its digits is 5880, while the sum is 33.

The square root of 1225717611 is about 35010.2500847966. The cubic root of 1225717611 is about 1070.1963744157.

The spelling of 1225717611 in words is "one billion, two hundred twenty-five million, seven hundred seventeen thousand, six hundred eleven".