145489625 has 16 divisors (see below), whose sum is σ = 181907856. Its totient is φ = 116176000.

The previous prime is 145489609. The next prime is 145489633. The reversal of 145489625 is 526984541.

It can be written as a sum of positive squares in 8 ways, for example, as 51380224 + 94109401 = 7168^2 + 9701^2 .

It is not a de Polignac number, because 145489625 - 2⁴ = 145489609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132077 + ... + 133173.

It is an arithmetic number, because the mean of its divisors is an integer number (11369241).

Almost surely, 2^145489625 is an apocalyptic number.

It is an amenable number.

145489625 is a deficient number, since it is larger than the sum of its proper divisors (36418231).

145489625 is a wasteful number, since it uses less digits than its factorization.

145489625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173 (or 2163 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 145489625 is about 12061.9080165619. The cubic root of 145489625 is about 525.9494534744.

The spelling of 145489625 in words is "one hundred forty-five million, four hundred eighty-nine thousand, six hundred twenty-five".