1225668091 has 16 divisors (see below), whose sum is σ = 1355747328. Its totient is φ = 1102147200.

The previous prime is 1225668083. The next prime is 1225668109. The reversal of 1225668091 is 1908665221.

It is a cyclic number.

It is not a de Polignac number, because 1225668091 - 2³ = 1225668083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225668011) by changing a digit.

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, 574096 + ... + 576226.

It is an arithmetic number, because the mean of its divisors is an integer number (84734208).

Almost surely, 2^1225668091 is an apocalyptic number.

1225668091 is a deficient number, since it is larger than the sum of its proper divisors (130079237).

1225668091 is a wasteful number, since it uses less digits than its factorization.

1225668091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1225668091 is about 35009.5428561985. The cubic root of 1225668091 is about 1070.1819619502.

The spelling of 1225668091 in words is "one billion, two hundred twenty-five million, six hundred sixty-eight thousand, ninety-one".