1525226 has 8 divisors (see below), whose sum is σ = 2366820. Its totient is φ = 736288.

The previous prime is 1525219. The next prime is 1525229. The reversal of 1525226 is 6225251.

It is a Cunningham number, because it is equal to 1235²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 1525225 + 1 = 1235^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1525229) 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, 13091 + ... + 13206.

2^1525226 is an apocalyptic number.

1525226 is a deficient number, since it is larger than the sum of its proper divisors (841594).

1525226 is a wasteful number, since it uses less digits than its factorization.

1525226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26328.

The product of its digits is 1200, while the sum is 23.

The square root of 1525226 is about 1235.0004048582. Note that the first 3 decimals coincide. The cubic root of 1525226 is about 115.1095616230.

The spelling of 1525226 in words is "one million, five hundred twenty-five thousand, two hundred twenty-six".