1625453123 has 8 divisors (see below), whose sum is σ = 1897185792. Its totient is φ = 1363601736.

The previous prime is 1625453119. The next prime is 1625453177. The reversal of 1625453123 is 3213545261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1625453123 - 2² = 1625453119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1625453123.

It is not an unprimeable number, because it can be changed into a prime (1625453183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2469965 + ... + 2470622.

It is an arithmetic number, because the mean of its divisors is an integer number (237148224).

Almost surely, 2^1625453123 is an apocalyptic number.

1625453123 is a deficient number, since it is larger than the sum of its proper divisors (271732669).

1625453123 is an equidigital number, since it uses as much as digits as its factorization.

1625453123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940641.

The product of its digits is 21600, while the sum is 32.

The square root of 1625453123 is about 40316.9086488535. The cubic root of 1625453123 is about 1175.7766099949.

Adding to 1625453123 its reverse (3213545261), we get a palindrome (4838998384).

The spelling of 1625453123 in words is "one billion, six hundred twenty-five million, four hundred fifty-three thousand, one hundred twenty-three".