145011225 has 24 divisors (see below), whose sum is σ = 240118560. Its totient is φ = 77221120.

The previous prime is 145011221. The next prime is 145011239. The reversal of 145011225 is 522110541.

It is not a de Polignac number, because 145011225 - 2² = 145011221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145011221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72286 + ... + 74264.

It is an arithmetic number, because the mean of its divisors is an integer number (10004940).

Almost surely, 2^145011225 is an apocalyptic number.

145011225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145011225 is a deficient number, since it is larger than the sum of its proper divisors (95107335).

145011225 is a wasteful number, since it uses less digits than its factorization.

145011225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969 (or 2964 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 145011225 is about 12042.0606625278. The cubic root of 145011225 is about 525.3723435716.

Adding to 145011225 its reverse (522110541), we get a palindrome (667121766).

The spelling of 145011225 in words is "one hundred forty-five million, eleven thousand, two hundred twenty-five".