245352530251 has 2 divisors, whose sum is σ = 245352530252. Its totient is φ = 245352530250.

The previous prime is 245352530231. The next prime is 245352530287. The reversal of 245352530251 is 152035253542.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245352530251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245352530251.

It is not a weakly prime, because it can be changed into another prime (245352530201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122676265125 + 122676265126.

It is an arithmetic number, because the mean of its divisors is an integer number (122676265126).

Almost surely, 2^245352530251 is an apocalyptic number.

245352530251 is a deficient number, since it is larger than the sum of its proper divisors (1).

245352530251 is an equidigital number, since it uses as much as digits as its factorization.

245352530251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180000, while the sum is 37.

Adding to 245352530251 its reverse (152035253542), we get a palindrome (397387783793).

It can be divided in two parts, 2453525 and 30251, that added together give a square (2483776 = 1576²).

The spelling of 245352530251 in words is "two hundred forty-five billion, three hundred fifty-two million, five hundred thirty thousand, two hundred fifty-one".