145212331252005 has 16 divisors (see below), whose sum is σ = 258155255559360. Its totient is φ = 77446576667664.

The previous prime is 145212331251943. The next prime is 145212331252013. The reversal of 145212331252005 is 500252133212541.

145212331252005 is a `hidden beast` number, since 1 + 4 + 5 + 2 + 123 + 3 + 1 + 2 + 520 + 0 + 5 = 666.

It is not a de Polignac number, because 145212331252005 - 2²⁰ = 145212330203429 is a prime.

It is a super-2 number, since 2×145212331252005² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537823448947 + ... + 537823449216.

It is an arithmetic number, because the mean of its divisors is an integer number (16134703472460).

Almost surely, 2^{145212331252005} is an apocalyptic number.

145212331252005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145212331252005 is a deficient number, since it is larger than the sum of its proper divisors (112942924307355).

145212331252005 is a wasteful number, since it uses less digits than its factorization.

145212331252005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075646898177 (or 1075646898171 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 145212331252005 its reverse (500252133212541), we get a palindrome (645464464464546).

The spelling of 145212331252005 in words is "one hundred forty-five trillion, two hundred twelve billion, three hundred thirty-one million, two hundred fifty-two thousand, five".