1425425 has 24 divisors (see below), whose sum is σ = 1922496. Its totient is φ = 1045440.

The previous prime is 1425371. The next prime is 1425427. The reversal of 1425425 is 5245241.

1425425 = 25² + 26² + ... + 162².

It is a happy number.

It is not a de Polignac number, because 1425425 - 2⁸ = 1425169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1425425.

It is not an unprimeable number, because it can be changed into a prime (1425427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21242 + ... + 21308.

It is an arithmetic number, because the mean of its divisors is an integer number (80104).

2^1425425 is an apocalyptic number.

It is an amenable number.

1425425 is a deficient number, since it is larger than the sum of its proper divisors (497071).

1425425 is a wasteful number, since it uses less digits than its factorization.

1425425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 132 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 1425425 is about 1193.9116382714. The cubic root of 1425425 is about 112.5420418999.

The spelling of 1425425 in words is "one million, four hundred twenty-five thousand, four hundred twenty-five".