145020004253 has 4 divisors (see below), whose sum is σ = 145888387680. Its totient is φ = 144151620828.

The previous prime is 145020004187. The next prime is 145020004307. The reversal of 145020004253 is 352400020541.

It is a happy number.

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 not a de Polignac number, because 145020004253 - 2¹² = 145020000157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145020004153) 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, 434191463 + ... + 434191796.

It is an arithmetic number, because the mean of its divisors is an integer number (36472096920).

Almost surely, 2^145020004253 is an apocalyptic number.

It is an amenable number.

145020004253 is a deficient number, since it is larger than the sum of its proper divisors (868383427).

145020004253 is an equidigital number, since it uses as much as digits as its factorization.

145020004253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868383426.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 145020004253 its reverse (352400020541), we get a palindrome (497420024794).

The spelling of 145020004253 in words is "one hundred forty-five billion, twenty million, four thousand, two hundred fifty-three".