1425864 has 48 divisors (see below), whose sum is σ = 3926160. Its totient is φ = 431200.

The previous prime is 1425863. The next prime is 1425877. The reversal of 1425864 is 4685241.

It is not an unprimeable number, because it can be changed into a prime (1425863) 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, 2659 + ... + 3149.

It is an arithmetic number, because the mean of its divisors is an integer number (81795).

2^1425864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1425864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1963080).

1425864 is an abundant number, since it is smaller than the sum of its proper divisors (2500296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1425864 is a wasteful number, since it uses less digits than its factorization.

1425864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522 (or 507 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 1425864 is about 1194.0954735698. The cubic root of 1425864 is about 112.5535942171.

It can be divided in two parts, 142 and 5864, that added together give a palindrome (6006).

The spelling of 1425864 in words is "one million, four hundred twenty-five thousand, eight hundred sixty-four".