1366011444225 has 24 divisors (see below), whose sum is σ = 2258516870272. Its totient is φ = 728525044800.

The previous prime is 1366011444223. The next prime is 1366011444289. The reversal of 1366011444225 is 5224441106631.

It is not a de Polignac number, because 1366011444225 - 2¹ = 1366011444223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366011444223) 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, 4421295 + ... + 4720155.

Almost surely, 2^{1366011444225} is an apocalyptic number.

1366011444225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1366011444225 is a deficient number, since it is larger than the sum of its proper divisors (892505426047).

1366011444225 is a wasteful number, since it uses less digits than its factorization.

1366011444225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359817 (or 359812 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 1366011444225 in words is "one trillion, three hundred sixty-six billion, eleven million, four hundred forty-four thousand, two hundred twenty-five".