145425253 has 4 divisors (see below), whose sum is σ = 147473568. Its totient is φ = 143376940.

The previous prime is 145425239. The next prime is 145425257. The reversal of 145425253 is 352524541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145425253 is a prime.

It is a super-2 number, since 2×145425253² = 42297008420228018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145425257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1024051 + ... + 1024192.

It is an arithmetic number, because the mean of its divisors is an integer number (36868392).

Almost surely, 2^145425253 is an apocalyptic number.

It is an amenable number.

145425253 is a deficient number, since it is larger than the sum of its proper divisors (2048315).

145425253 is an equidigital number, since it uses as much as digits as its factorization.

145425253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048314.

The product of its digits is 24000, while the sum is 31.

The square root of 145425253 is about 12059.2393209522. The cubic root of 145425253 is about 525.8718731138.

Adding to 145425253 its reverse (352524541), we get a palindrome (497949794).

The spelling of 145425253 in words is "one hundred forty-five million, four hundred twenty-five thousand, two hundred fifty-three".