1225723 has 2 divisors, whose sum is σ = 1225724. Its totient is φ = 1225722.

The previous prime is 1225703. The next prime is 1225727. The reversal of 1225723 is 3275221.

It is a strong prime.

It is an emirp because it is prime and its reverse (3275221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1225723 - 2⁵ = 1225691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225694 and 1225703.

It is not a weakly prime, because it can be changed into another prime (1225727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612861 + 612862.

It is an arithmetic number, because the mean of its divisors is an integer number (612862).

2^1225723 is an apocalyptic number.

1225723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225723 is an equidigital number, since it uses as much as digits as its factorization.

1225723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 22.

The square root of 1225723 is about 1107.1237509872. The cubic root of 1225723 is about 107.0197942825.

The spelling of 1225723 in words is "one million, two hundred twenty-five thousand, seven hundred twenty-three".