145125173 has 4 divisors (see below), whose sum is σ = 152763360. Its totient is φ = 137486988.

The previous prime is 145125163. The next prime is 145125181. The reversal of 145125173 is 371521541.

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 145125173 - 2²⁴ = 128347957 is a prime.

It is a super-2 number, since 2×145125173² = 42122631676559858, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145125103) 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, 3819065 + ... + 3819102.

It is an arithmetic number, because the mean of its divisors is an integer number (38190840).

Almost surely, 2^145125173 is an apocalyptic number.

It is an amenable number.

145125173 is a deficient number, since it is larger than the sum of its proper divisors (7638187).

145125173 is an equidigital number, since it uses as much as digits as its factorization.

145125173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7638186.

The product of its digits is 4200, while the sum is 29.

The square root of 145125173 is about 12046.7909834943. The cubic root of 145125173 is about 525.5099178737.

The spelling of 145125173 in words is "one hundred forty-five million, one hundred twenty-five thousand, one hundred seventy-three".