1229025 has 24 divisors (see below), whose sum is σ = 2323264. Its totient is φ = 561600.

The previous prime is 1229023. The next prime is 1229071. The reversal of 1229025 is 5209221.

1229025 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 1229025 - 2¹ = 1229023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

1229025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1228992 and 1229010.

It is not an unprimeable number, because it can be changed into a prime (1229021) 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, 646 + ... + 1695.

2^1229025 is an apocalyptic number.

1229025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1229025 is a deficient number, since it is larger than the sum of its proper divisors (1094239).

1229025 is a wasteful number, since it uses less digits than its factorization.

1229025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2356 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1229025 is about 1108.6139995508. The cubic root of 1229025 is about 107.1158090453.

The spelling of 1229025 in words is "one million, two hundred twenty-nine thousand, twenty-five".