1225854 has 80 divisors (see below), whose sum is σ = 3345408. Its totient is φ = 327888.

The previous prime is 1225849. The next prime is 1225871. The reversal of 1225854 is 4585221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26059 + ... + 26105.

2^1225854 is an apocalyptic number.

1225854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672704).

1225854 is an abundant number, since it is smaller than the sum of its proper divisors (2119554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225854 is a wasteful number, since it uses less digits than its factorization.

1225854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 82 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1225854 is about 1107.1829117178. The cubic root of 1225854 is about 107.0236067517.

The spelling of 1225854 in words is "one million, two hundred twenty-five thousand, eight hundred fifty-four".