1425246169 has 4 divisors (see below), whose sum is σ = 1425542580. Its totient is φ = 1424949760.

The previous prime is 1425246143. The next prime is 1425246191. The reversal of 1425246169 is 9616425241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9616425241 = 17 ⋅565672073.

It can be written as a sum of positive squares in 2 ways, for example, as 1197990544 + 227255625 = 34612^2 + 15075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425246169 - 2²⁷ = 1291028441 is a prime.

It is a super-2 number, since 2×1425246169² = 4062653284498353122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1425246269) 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, 140872 + ... + 150649.

It is an arithmetic number, because the mean of its divisors is an integer number (356385645).

Almost surely, 2^1425246169 is an apocalyptic number.

It is an amenable number.

1425246169 is a deficient number, since it is larger than the sum of its proper divisors (296411).

1425246169 is an equidigital number, since it uses as much as digits as its factorization.

1425246169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296410.

The product of its digits is 103680, while the sum is 40.

The square root of 1425246169 is about 37752.4326236072. The cubic root of 1425246169 is about 1125.3733526911.

The spelling of 1425246169 in words is "one billion, four hundred twenty-five million, two hundred forty-six thousand, one hundred sixty-nine".