1225672 has 32 divisors (see below), whose sum is σ = 2692800. Its totient is φ = 512064.

The previous prime is 1225663. The next prime is 1225687. The reversal of 1225672 is 2765221.

It is a zygodrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154 + ... + 2662.

It is an arithmetic number, because the mean of its divisors is an integer number (84150).

2^1225672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1346400).

1225672 is an abundant number, since it is smaller than the sum of its proper divisors (1467128).

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

1225672 is a wasteful number, since it uses less digits than its factorization.

1225672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 561 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 1225672 is about 1107.1007180921. The cubic root of 1225672 is about 107.0183099653.

The spelling of 1225672 in words is "one million, two hundred twenty-five thousand, six hundred seventy-two".