1286167425 has 12 divisors (see below), whose sum is σ = 2126463600. Its totient is φ = 685955920.

The previous prime is 1286167403. The next prime is 1286167433. The reversal of 1286167425 is 5247616821.

It is a happy number.

It is not a de Polignac number, because 1286167425 - 2⁹ = 1286166913 is a prime.

It is a super-2 number, since 2×1286167425² = 3308453290262261250, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8574375 + ... + 8574524.

It is an arithmetic number, because the mean of its divisors is an integer number (177205300).

Almost surely, 2^1286167425 is an apocalyptic number.

1286167425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1286167425 is a deficient number, since it is larger than the sum of its proper divisors (840296175).

1286167425 is a wasteful number, since it uses less digits than its factorization.

1286167425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17148912 (or 17148907 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 1286167425 is about 35863.1764488312. The cubic root of 1286167425 is about 1087.5081040485.

The spelling of 1286167425 in words is "one billion, two hundred eighty-six million, one hundred sixty-seven thousand, four hundred twenty-five".