1286625 has 32 divisors (see below), whose sum is σ = 2216448. Its totient is φ = 662400.

The previous prime is 1286617. The next prime is 1286629. The reversal of 1286625 is 5266821.

It is not a de Polignac number, because 1286625 - 2³ = 1286617 is a prime.

Its product of digits (5760) is a multiple of the sum of its prime divisors (128).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1286592 and 1286601.

It is not an unprimeable number, because it can be changed into a prime (1286629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17589 + ... + 17661.

It is an arithmetic number, because the mean of its divisors is an integer number (69264).

2^1286625 is an apocalyptic number.

1286625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1286625 is a deficient number, since it is larger than the sum of its proper divisors (929823).

1286625 is an equidigital number, since it uses as much as digits as its factorization.

1286625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 128 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 1286625 is about 1134.2949351910. The cubic root of 1286625 is about 108.7637054995.

The spelling of 1286625 in words is "one million, two hundred eighty-six thousand, six hundred twenty-five".