1366625 has 24 divisors (see below), whose sum is σ = 1902264. Its totient is φ = 974400.

The previous prime is 1366609. The next prime is 1366627. The reversal of 1366625 is 5266631.

1366625 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 12 ways, for example, as 1157776 + 208849 = 1076^2 + 457^2 .

It is not a de Polignac number, because 1366625 - 2⁴ = 1366609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366627) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47111 + ... + 47139.

It is an arithmetic number, because the mean of its divisors is an integer number (79261).

2^1366625 is an apocalyptic number.

It is an amenable number.

1366625 is a deficient number, since it is larger than the sum of its proper divisors (535639).

1366625 is an equidigital number, since it uses as much as digits as its factorization.

1366625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 47 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 1366625 is about 1169.0273735033. The cubic root of 1366625 is about 110.9727769184.

It can be divided in two parts, 1366 and 625, that added together give a palindrome (1991).

The spelling of 1366625 in words is "one million, three hundred sixty-six thousand, six hundred twenty-five".