1225711 has 4 divisors (see below), whose sum is σ = 1236672. Its totient is φ = 1214752.

The previous prime is 1225703. The next prime is 1225723. The reversal of 1225711 is 1175221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1175221 = 59 ⋅19919.

It is a cyclic number.

It is not a de Polignac number, because 1225711 - 2³ = 1225703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5311 + ... + 5536.

It is an arithmetic number, because the mean of its divisors is an integer number (309168).

2^1225711 is an apocalyptic number.

1225711 is a deficient number, since it is larger than the sum of its proper divisors (10961).

1225711 is a wasteful number, since it uses less digits than its factorization.

1225711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10960.

The product of its digits is 140, while the sum is 19.

The square root of 1225711 is about 1107.1183315256. The cubic root of 1225711 is about 107.0194450351.

It can be divided in two parts, 1225 and 711, that added together give a square (1936 = 44²).

The spelling of 1225711 in words is "one million, two hundred twenty-five thousand, seven hundred eleven".