202500145 has 8 divisors (see below), whose sum is σ = 243140904. Its totient is φ = 161906304.

The previous prime is 202500139. The next prime is 202500161. The reversal of 202500145 is 541005202.

It can be written as a sum of positive squares in 4 ways, for example, as 60699681 + 141800464 = 7791^2 + 11908^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202500145 - 2⁵ = 202500113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1404 + ... + 20173.

It is an arithmetic number, because the mean of its divisors is an integer number (30392613).

Almost surely, 2^202500145 is an apocalyptic number.

It is an amenable number.

202500145 is a deficient number, since it is larger than the sum of its proper divisors (40640759).

202500145 is a wasteful number, since it uses less digits than its factorization.

202500145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23459.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 202500145 is about 14230.2545655375. The cubic root of 202500145 is about 587.2302863372.

Adding to 202500145 its reverse (541005202), we get a palindrome (743505347).

The spelling of 202500145 in words is "two hundred two million, five hundred thousand, one hundred forty-five".