1225470 has 16 divisors (see below), whose sum is σ = 2941200. Its totient is φ = 326784.

The previous prime is 1225459. The next prime is 1225493. The reversal of 1225470 is 745221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20395 + ... + 20454.

It is an arithmetic number, because the mean of its divisors is an integer number (183825).

2^1225470 is an apocalyptic number.

1225470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225470 is an abundant number, since it is smaller than the sum of its proper divisors (1715730).

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

1225470 is a wasteful number, since it uses less digits than its factorization.

1225470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40859.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1225470 is about 1107.0094850542. The cubic root of 1225470 is about 107.0124305004.

Subtracting from 1225470 its sum of digits (21), we obtain a square (1225449 = 1107²).

Subtracting from 1225470 its reverse (745221), we obtain a square (480249 = 693²).

The spelling of 1225470 in words is "one million, two hundred twenty-five thousand, four hundred seventy".