145425423 has 24 divisors (see below), whose sum is σ = 229532464. Its totient is φ = 81354240.

The previous prime is 145425421. The next prime is 145425451. The reversal of 145425423 is 324524541.

It is not a de Polignac number, because 145425423 - 2¹ = 145425421 is a prime.

It is a super-2 number, since 2×145425423² = 42297107309457858, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145425421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10690 + ... + 20127.

Almost surely, 2^145425423 is an apocalyptic number.

145425423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145425423 is a deficient number, since it is larger than the sum of its proper divisors (84107041).

145425423 is a wasteful number, since it uses less digits than its factorization.

145425423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30855 (or 30844 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 145425423 is about 12059.2463694876. The cubic root of 145425423 is about 525.8720780259.

Adding to 145425423 its reverse (324524541), we get a palindrome (469949964).

The spelling of 145425423 in words is "one hundred forty-five million, four hundred twenty-five thousand, four hundred twenty-three".