1225425 has 12 divisors (see below), whose sum is σ = 2026160. Its totient is φ = 653520.

The previous prime is 1225409. The next prime is 1225459. The reversal of 1225425 is 5245221.

It is a happy number.

It is not a de Polignac number, because 1225425 - 2⁴ = 1225409 is a prime.

1225425 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8095 + ... + 8244.

2^1225425 is an apocalyptic number.

1225425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1225425 is a deficient number, since it is larger than the sum of its proper divisors (800735).

1225425 is a wasteful number, since it uses less digits than its factorization.

1225425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16352 (or 16347 counting only the distinct ones).

The product of its digits is 800, while the sum is 21.

The square root of 1225425 is about 1106.9891598385. The cubic root of 1225425 is about 107.0111206307.

The spelling of 1225425 in words is "one million, two hundred twenty-five thousand, four hundred twenty-five".