1225629 has 12 divisors (see below), whose sum is σ = 1812096. Its totient is φ = 797832.

The previous prime is 1225621. The next prime is 1225643. The reversal of 1225629 is 9265221.

1225629 is a `hidden beast` number, since 12 + 25 + 629 = 666.

It is not a de Polignac number, because 1225629 - 2³ = 1225621 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 1197 + ... + 1970.

It is an arithmetic number, because the mean of its divisors is an integer number (151008).

2^1225629 is an apocalyptic number.

It is an amenable number.

1225629 is a deficient number, since it is larger than the sum of its proper divisors (586467).

1225629 is a wasteful number, since it uses less digits than its factorization.

1225629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216 (or 3213 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1225629 is about 1107.0812978278. The cubic root of 1225629 is about 107.0170584501.

The spelling of 1225629 in words is "one million, two hundred twenty-five thousand, six hundred twenty-nine".