145820085 has 32 divisors (see below), whose sum is σ = 239334912. Its totient is φ = 75778560.

The previous prime is 145820083. The next prime is 145820089. The reversal of 145820085 is 580028541.

It is not a de Polignac number, because 145820085 - 2¹ = 145820083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145820083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279625 + ... + 280145.

It is an arithmetic number, because the mean of its divisors is an integer number (7479216).

Almost surely, 2^145820085 is an apocalyptic number.

145820085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145820085 is a deficient number, since it is larger than the sum of its proper divisors (93514827).

145820085 is a wasteful number, since it uses less digits than its factorization.

145820085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 145820085 is about 12075.5987429195. The cubic root of 145820085 is about 526.3473600387.

The spelling of 145820085 in words is "one hundred forty-five million, eight hundred twenty thousand, eighty-five".