1425660 has 24 divisors (see below), whose sum is σ = 3992016. Its totient is φ = 380160.

The previous prime is 1425653. The next prime is 1425661. The reversal of 1425660 is 665241.

It is a self number, because there is not a number n which added to its sum of digits gives 1425660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11821 + ... + 11940.

It is an arithmetic number, because the mean of its divisors is an integer number (166334).

2^1425660 is an apocalyptic number.

1425660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1425660 is an abundant number, since it is smaller than the sum of its proper divisors (2566356).

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

1425660 is a wasteful number, since it uses less digits than its factorization.

1425660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23773 (or 23771 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1425660 is about 1194.0100502090. The cubic root of 1425660 is about 112.5482262371.

Subtracting from 1425660 its sum of digits (24), we obtain a square (1425636 = 1194²).

The spelling of 1425660 in words is "one million, four hundred twenty-five thousand, six hundred sixty".