624000256261 has 2 divisors, whose sum is σ = 624000256262. Its totient is φ = 624000256260.

The previous prime is 624000256249. The next prime is 624000256283. The reversal of 624000256261 is 162652000426.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 552783328036 + 71216928225 = 743494^2 + 266865^2 .

It is a cyclic number.

It is not a de Polignac number, because 624000256261 - 2⁷ = 624000256133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (624000256241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312000128130 + 312000128131.

It is an arithmetic number, because the mean of its divisors is an integer number (312000128131).

Almost surely, 2^624000256261 is an apocalyptic number.

It is an amenable number.

624000256261 is a deficient number, since it is larger than the sum of its proper divisors (1).

624000256261 is an equidigital number, since it uses as much as digits as its factorization.

624000256261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 624000256261 its reverse (162652000426), we get a palindrome (786652256687).

The spelling of 624000256261 in words is "six hundred twenty-four billion, two hundred fifty-six thousand, two hundred sixty-one".