1423666625 has 8 divisors (see below), whose sum is σ = 1776736104. Its totient is φ = 1138933200.

The previous prime is 1423666597. The next prime is 1423666631. The reversal of 1423666625 is 5266663241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 387341761 + 1036324864 = 19681^2 + 32192^2 .

It is not a de Polignac number, because 1423666625 - 2¹⁰ = 1423665601 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 5694542 + ... + 5694791.

It is an arithmetic number, because the mean of its divisors is an integer number (222092013).

Almost surely, 2^1423666625 is an apocalyptic number.

It is an amenable number.

1423666625 is a deficient number, since it is larger than the sum of its proper divisors (353069479).

1423666625 is an equidigital number, since it uses as much as digits as its factorization.

1423666625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11389348 (or 11389338 counting only the distinct ones).

The product of its digits is 311040, while the sum is 41.

The square root of 1423666625 is about 37731.5070597505. The cubic root of 1423666625 is about 1124.9574634123.

The spelling of 1423666625 in words is "one billion, four hundred twenty-three million, six hundred sixty-six thousand, six hundred twenty-five".