1571225 has 12 divisors (see below), whose sum is σ = 2063484. Its totient is φ = 1182720.

The previous prime is 1571221. The next prime is 1571233. The reversal of 1571225 is 5221751.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 85264 + 1485961 = 292^2 + 1219^2 .

It is not a de Polignac number, because 1571225 - 2² = 1571221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1571225.

It is not an unprimeable number, because it can be changed into a prime (1571221) 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, 1424 + ... + 2273.

It is an arithmetic number, because the mean of its divisors is an integer number (171957).

2^1571225 is an apocalyptic number.

It is an amenable number.

1571225 is a deficient number, since it is larger than the sum of its proper divisors (492259).

1571225 is a wasteful number, since it uses less digits than its factorization.

1571225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724 (or 3719 counting only the distinct ones).

The product of its digits is 700, while the sum is 23.

The square root of 1571225 is about 1253.4851415154. The cubic root of 1571225 is about 116.2553086565.

Adding to 1571225 its reverse (5221751), we get a palindrome (6792976).

The spelling of 1571225 in words is "one million, five hundred seventy-one thousand, two hundred twenty-five".