1225379 has 4 divisors (see below), whose sum is σ = 1230960. Its totient is φ = 1219800.

The previous prime is 1225373. The next prime is 1225381. The reversal of 1225379 is 9735221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225379 - 2⁸ = 1225123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225373) 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, 2447 + ... + 2904.

It is an arithmetic number, because the mean of its divisors is an integer number (307740).

2^1225379 is an apocalyptic number.

1225379 is a deficient number, since it is larger than the sum of its proper divisors (5581).

1225379 is an equidigital number, since it uses as much as digits as its factorization.

1225379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580.

The product of its digits is 3780, while the sum is 29.

The square root of 1225379 is about 1106.9683825656. The cubic root of 1225379 is about 107.0097816195.

The spelling of 1225379 in words is "one million, two hundred twenty-five thousand, three hundred seventy-nine".