145205195251 has 2 divisors, whose sum is σ = 145205195252. Its totient is φ = 145205195250.

The previous prime is 145205195209. The next prime is 145205195287. The reversal of 145205195251 is 152591502541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145205195251 - 2²⁵ = 145171640819 is a prime.

It is not a weakly prime, because it can be changed into another prime (145205195651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72602597625 + 72602597626.

It is an arithmetic number, because the mean of its divisors is an integer number (72602597626).

Almost surely, 2^145205195251 is an apocalyptic number.

145205195251 is a deficient number, since it is larger than the sum of its proper divisors (1).

145205195251 is an equidigital number, since it uses as much as digits as its factorization.

145205195251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 40.

Adding to 145205195251 its reverse (152591502541), we get a palindrome (297796697792).

The spelling of 145205195251 in words is "one hundred forty-five billion, two hundred five million, one hundred ninety-five thousand, two hundred fifty-one".