1425220 has 12 divisors (see below), whose sum is σ = 2993004. Its totient is φ = 570080.

The previous prime is 1425217. The next prime is 1425227. The reversal of 1425220 is 225241.

It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 835396 = 768^2 + 914^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1425194 and 1425203.

It is not an unprimeable number, because it can be changed into a prime (1425227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35611 + ... + 35650.

It is an arithmetic number, because the mean of its divisors is an integer number (249417).

2^1425220 is an apocalyptic number.

1425220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1425220 is an abundant number, since it is smaller than the sum of its proper divisors (1567784).

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

1425220 is a wasteful number, since it uses less digits than its factorization.

1425220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71270 (or 71268 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1425220 is about 1193.8257829348. The cubic root of 1425220 is about 112.5366464974.

The spelling of 1425220 in words is "one million, four hundred twenty-five thousand, two hundred twenty".