1366261025 has 12 divisors (see below), whose sum is σ = 1783330800. Its totient is φ = 1035481680.

The previous prime is 1366261007. The next prime is 1366261033. The reversal of 1366261025 is 5201626631.

It is not a de Polignac number, because 1366261025 - 2⁸ = 1366260769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1366260982 and 1366261000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1437695 + ... + 1438644.

It is an arithmetic number, because the mean of its divisors is an integer number (148610900).

Almost surely, 2^1366261025 is an apocalyptic number.

It is an amenable number.

1366261025 is a deficient number, since it is larger than the sum of its proper divisors (417069775).

1366261025 is a wasteful number, since it uses less digits than its factorization.

1366261025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876368 (or 2876363 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1366261025 is about 36962.9682926033. The cubic root of 1366261025 is about 1109.6292420270.

Adding to 1366261025 its reverse (5201626631), we get a palindrome (6567887656).

The spelling of 1366261025 in words is "one billion, three hundred sixty-six million, two hundred sixty-one thousand, twenty-five".