145537225 has 24 divisors (see below), whose sum is σ = 187845120. Its totient is φ = 111720000.

The previous prime is 145537193. The next prime is 145537237. The reversal of 145537225 is 522735541.

It is not a de Polignac number, because 145537225 - 2⁵ = 145537193 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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 23 ways as a sum of consecutive naturals, for example, 137950 + ... + 139000.

It is an arithmetic number, because the mean of its divisors is an integer number (7826880).

Almost surely, 2^145537225 is an apocalyptic number.

It is an amenable number.

145537225 is a deficient number, since it is larger than the sum of its proper divisors (42307895).

145537225 is a wasteful number, since it uses less digits than its factorization.

145537225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281 (or 1276 counting only the distinct ones).

The product of its digits is 42000, while the sum is 34.

The square root of 145537225 is about 12063.8810090286. The cubic root of 145537225 is about 526.0068057064.

The spelling of 145537225 in words is "one hundred forty-five million, five hundred thirty-seven thousand, two hundred twenty-five".