145025985 has 32 divisors (see below), whose sum is σ = 250524288. Its totient is φ = 71216640.

The previous prime is 145025941. The next prime is 145026019. The reversal of 145025985 is 589520541.

It is not a de Polignac number, because 145025985 - 2⁷ = 145025857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109125 + ... + 110445.

It is an arithmetic number, because the mean of its divisors is an integer number (7828884).

Almost surely, 2^145025985 is an apocalyptic number.

145025985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145025985 is a deficient number, since it is larger than the sum of its proper divisors (105498303).

145025985 is a wasteful number, since it uses less digits than its factorization.

145025985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905.

The product of its (nonzero) digits is 72000, while the sum is 39.

The square root of 145025985 is about 12042.6734988540. The cubic root of 145025985 is about 525.3901680141.

The spelling of 145025985 in words is "one hundred forty-five million, twenty-five thousand, nine hundred eighty-five".