145224075625 has 20 divisors (see below), whose sum is σ = 185898184164. Its totient is φ = 113345600000.

The previous prime is 145224075593. The next prime is 145224075637. The reversal of 145224075625 is 526570422541.

It can be written as a sum of positive squares in 10 ways, for example, as 114561263961 + 30662811664 = 338469^2 + 175108^2 .

It is not a de Polignac number, because 145224075625 - 2⁵ = 145224075593 is a prime.

It is a super-2 number, since 2×145224075625² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2808016 + ... + 2859265.

Almost surely, 2^145224075625 is an apocalyptic number.

It is an amenable number.

145224075625 is a deficient number, since it is larger than the sum of its proper divisors (40674108539).

145224075625 is an frugal number, since it uses more digits than its factorization.

145224075625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667342 (or 5667327 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 43.

The spelling of 145224075625 in words is "one hundred forty-five billion, two hundred twenty-four million, seventy-five thousand, six hundred twenty-five".