1225665423 has 12 divisors (see below), whose sum is σ = 1847380080. Its totient is φ = 781583616.

The previous prime is 1225665407. The next prime is 1225665437. The reversal of 1225665423 is 3245665221.

1225665423 is a `hidden beast` number, since 1 + 22 + 566 + 54 + 23 = 666.

It is not a de Polignac number, because 1225665423 - 2⁴ = 1225665407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225665223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2960338 + ... + 2960751.

It is an arithmetic number, because the mean of its divisors is an integer number (153948340).

Almost surely, 2^1225665423 is an apocalyptic number.

1225665423 is a deficient number, since it is larger than the sum of its proper divisors (621714657).

1225665423 is a wasteful number, since it uses less digits than its factorization.

1225665423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5921118 (or 5921115 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1225665423 is about 35009.5047522812. The cubic root of 1225665423 is about 1070.1811854356.

The spelling of 1225665423 in words is "one billion, two hundred twenty-five million, six hundred sixty-five thousand, four hundred twenty-three".