1225260171366 has 32 divisors (see below), whose sum is σ = 3055194194688. Its totient is φ = 318249395040.

The previous prime is 1225260171353. The next prime is 1225260171449. The reversal of 1225260171366 is 6631710625221.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1326038685 + ... + 1326039608.

It is an arithmetic number, because the mean of its divisors is an integer number (95474818584).

Almost surely, 2^{1225260171366} is an apocalyptic number.

1225260171366 is an abundant number, since it is smaller than the sum of its proper divisors (1829934023322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225260171366 is a wasteful number, since it uses less digits than its factorization.

1225260171366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652078316.

The product of its (nonzero) digits is 181440, while the sum is 42.

Adding to 1225260171366 its reverse (6631710625221), we get a palindrome (7856970796587).

The spelling of 1225260171366 in words is "one trillion, two hundred twenty-five billion, two hundred sixty million, one hundred seventy-one thousand, three hundred sixty-six".