145252006221231 has 48 divisors (see below), whose sum is σ = 263719954627584. Its totient is φ = 74986305740352.

The previous prime is 145252006221209. The next prime is 145252006221233. The reversal of 145252006221231 is 132122600252541.

145252006221231 is a `hidden beast` number, since 1 + 4 + 5 + 2 + 5 + 2 + 0 + 0 + 622 + 1 + 23 + 1 = 666.

It is not a de Polignac number, because 145252006221231 - 2⁷ = 145252006221103 is a prime.

It is a super-2 number, since 2×145252006221231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145252006221233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1886694241 + ... + 1886771226.

It is an arithmetic number, because the mean of its divisors is an integer number (5494165721408).

Almost surely, 2^{145252006221231} is an apocalyptic number.

145252006221231 is a deficient number, since it is larger than the sum of its proper divisors (118467948406353).

145252006221231 is a wasteful number, since it uses less digits than its factorization.

145252006221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773465540 (or 3773465537 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 145252006221231 its reverse (132122600252541), we get a palindrome (277374606473772).

The spelling of 145252006221231 in words is "one hundred forty-five trillion, two hundred fifty-two billion, six million, two hundred twenty-one thousand, two hundred thirty-one".