145446225 has 12 divisors (see below), whose sum is σ = 240471216. Its totient is φ = 77571280.

The previous prime is 145446211. The next prime is 145446233. The reversal of 145446225 is 522644541.

It is not a de Polignac number, because 145446225 - 2⁴ = 145446209 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 969567 + ... + 969716.

It is an arithmetic number, because the mean of its divisors is an integer number (20039268).

Almost surely, 2^145446225 is an apocalyptic number.

145446225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145446225 is a deficient number, since it is larger than the sum of its proper divisors (95024991).

145446225 is a wasteful number, since it uses less digits than its factorization.

145446225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939296 (or 1939291 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The square root of 145446225 is about 12060.1088303547. The cubic root of 145446225 is about 525.8971508299.

The spelling of 145446225 in words is "one hundred forty-five million, four hundred forty-six thousand, two hundred twenty-five".