251083423529 has 2 divisors, whose sum is σ = 251083423530. Its totient is φ = 251083423528.

The previous prime is 251083423447. The next prime is 251083423531. The reversal of 251083423529 is 925324380152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136400955625 + 114682467904 = 369325^2 + 338648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251083423529 is a prime.

Together with 251083423531, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 251083423529.

It is not a weakly prime, because it can be changed into another prime (251083425529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125541711764 + 125541711765.

It is an arithmetic number, because the mean of its divisors is an integer number (125541711765).

Almost surely, 2^251083423529 is an apocalyptic number.

It is an amenable number.

251083423529 is a deficient number, since it is larger than the sum of its proper divisors (1).

251083423529 is an equidigital number, since it uses as much as digits as its factorization.

251083423529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 251083423529 in words is "two hundred fifty-one billion, eighty-three million, four hundred twenty-three thousand, five hundred twenty-nine".