145722085 has 8 divisors (see below), whose sum is σ = 175465080. Its totient is φ = 116178624.

The previous prime is 145722067. The next prime is 145722091. The reversal of 145722085 is 580227541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27217089 + 118504996 = 5217^2 + 10886^2 .

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 145722085 - 2⁵ = 145722053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145722085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48270 + ... + 51199.

It is an arithmetic number, because the mean of its divisors is an integer number (21933135).

Almost surely, 2^145722085 is an apocalyptic number.

It is an amenable number.

145722085 is a deficient number, since it is larger than the sum of its proper divisors (29742995).

145722085 is an equidigital number, since it uses as much as digits as its factorization.

145722085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99767.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 145722085 is about 12071.5402911145. The cubic root of 145722085 is about 526.2294210935.

The spelling of 145722085 in words is "one hundred forty-five million, seven hundred twenty-two thousand, eighty-five".