1225448 has 32 divisors (see below), whose sum is σ = 2668800. Its totient is φ = 516672.

The previous prime is 1225409. The next prime is 1225459. The reversal of 1225448 is 8445221.

It is a happy number.

It is a Cunningham number, because it is equal to 1107²-1.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

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, 4286 + ... + 4562.

It is an arithmetic number, because the mean of its divisors is an integer number (83400).

2^1225448 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 1225448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334400).

1225448 is an abundant number, since it is smaller than the sum of its proper divisors (1443352).

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

1225448 is a wasteful number, since it uses less digits than its factorization.

1225448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 365 counting only the distinct ones).

The product of its digits is 2560, while the sum is 26.

The square root of 1225448 is about 1106.9995483287. Note that the first 3 decimals coincide. The cubic root of 1225448 is about 107.0117901237.

The spelling of 1225448 in words is "one million, two hundred twenty-five thousand, four hundred forty-eight".