1425569 has 4 divisors (see below), whose sum is σ = 1509444. Its totient is φ = 1341696.

The previous prime is 1425547. The next prime is 1425583. The reversal of 1425569 is 9655241.

1425569 = T₄₀₁ + T₄₀₂ + ... + T₄₁₇.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9655241 = 191 ⋅50551.

It can be written as a sum of positive squares in 2 ways, for example, as 877969 + 547600 = 937^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425569 - 2¹² = 1421473 is a prime.

It is a super-2 number, since 2×1425569² = 4064493947522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1425539) 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, 41912 + ... + 41945.

It is an arithmetic number, because the mean of its divisors is an integer number (377361).

2^1425569 is an apocalyptic number.

It is an amenable number.

1425569 is a deficient number, since it is larger than the sum of its proper divisors (83875).

1425569 is an equidigital number, since it uses as much as digits as its factorization.

1425569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83874.

The product of its digits is 10800, while the sum is 32.

The square root of 1425569 is about 1193.9719427189. The cubic root of 1425569 is about 112.5458315319.

The spelling of 1425569 in words is "one million, four hundred twenty-five thousand, five hundred sixty-nine".