425512123 has 2 divisors, whose sum is σ = 425512124. Its totient is φ = 425512122.

The previous prime is 425512117. The next prime is 425512141. The reversal of 425512123 is 321215524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425512123 - 2¹⁷ = 425381051 is a prime.

It is not a weakly prime, because it can be changed into another prime (425512523) 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 as a sum of consecutive naturals, namely, 212756061 + 212756062.

It is an arithmetic number, because the mean of its divisors is an integer number (212756062).

Almost surely, 2^425512123 is an apocalyptic number.

425512123 is a deficient number, since it is larger than the sum of its proper divisors (1).

425512123 is an equidigital number, since it uses as much as digits as its factorization.

425512123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 425512123 is about 20627.9451957775. The cubic root of 425512123 is about 752.1491677032.

Adding to 425512123 its reverse (321215524), we get a palindrome (746727647).

The spelling of 425512123 in words is "four hundred twenty-five million, five hundred twelve thousand, one hundred twenty-three".