1225624 has 16 divisors (see below), whose sum is σ = 2398320. Its totient is φ = 586080.

The previous prime is 1225621. The next prime is 1225643. The reversal of 1225624 is 4265221.

It is a junction number, because it is equal to n+sod(n) for n = 1225595 and 1225604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225621) 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, 3147 + ... + 3514.

It is an arithmetic number, because the mean of its divisors is an integer number (149895).

2^1225624 is an apocalyptic number.

It is an amenable number.

1225624 is a deficient number, since it is larger than the sum of its proper divisors (1172696).

1225624 is a wasteful number, since it uses less digits than its factorization.

1225624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690 (or 6686 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 1225624 is about 1107.0790396354. The cubic root of 1225624 is about 107.0169129232.

It can be divided in two parts, 1225 and 624, that added together give a square (1849 = 43²).

The spelling of 1225624 in words is "one million, two hundred twenty-five thousand, six hundred twenty-four".