1225413 has 24 divisors (see below), whose sum is σ = 2066688. Its totient is φ = 685152.

The previous prime is 1225409. The next prime is 1225459. The reversal of 1225413 is 3145221.

1225413 is a `hidden beast` number, since 122 + 541 + 3 = 666.

It is not a de Polignac number, because 1225413 - 2² = 1225409 is a prime.

It is a Curzon number.

1225413 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3156 + ... + 3522.

It is an arithmetic number, because the mean of its divisors is an integer number (86112).

2^1225413 is an apocalyptic number.

It is an amenable number.

1225413 is a deficient number, since it is larger than the sum of its proper divisors (841275).

1225413 is a wasteful number, since it uses less digits than its factorization.

1225413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 430 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1225413 is about 1106.9837397180. The cubic root of 1225413 is about 107.0107713266.

Subtracting from 1225413 its sum of digits (18), we obtain a triangular number (1225395 = T₁₅₆₅).

It can be divided in two parts, 12 and 25413, that added together give a triangular number (25425 = T₂₂₅).

The spelling of 1225413 in words is "one million, two hundred twenty-five thousand, four hundred thirteen".