145225616 has 20 divisors (see below), whose sum is σ = 285231372. Its totient is φ = 71617536.

The previous prime is 145225579. The next prime is 145225627. The reversal of 145225616 is 616522541.

It can be written as a sum of positive squares in 2 ways, for example, as 43296400 + 101929216 = 6580^2 + 10096^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61001 + ... + 63336.

Almost surely, 2^145225616 is an apocalyptic number.

145225616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145225616 is a deficient number, since it is larger than the sum of its proper divisors (140005756).

145225616 is a wasteful number, since it uses less digits than its factorization.

145225616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124418 (or 124412 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 145225616 is about 12050.9591319529. The cubic root of 145225616 is about 525.6311273070.

The spelling of 145225616 in words is "one hundred forty-five million, two hundred twenty-five thousand, six hundred sixteen".