626256261 has 12 divisors (see below), whose sum is σ = 906441120. Its totient is φ = 416650920.

The previous prime is 626256233. The next prime is 626256289. The reversal of 626256261 is 162652626.

626256261 is a `hidden beast` number, since 6 + 2 + 6 + 25 + 626 + 1 = 666.

626256261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (626256233) and next prime (626256289).

It is not a de Polignac number, because 626256261 - 2⁷ = 626256133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626256221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66441 + ... + 75278.

It is an arithmetic number, because the mean of its divisors is an integer number (75536760).

Almost surely, 2^626256261 is an apocalyptic number.

It is an amenable number.

626256261 is a deficient number, since it is larger than the sum of its proper divisors (280184859).

626256261 is a wasteful number, since it uses less digits than its factorization.

626256261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142216 (or 142213 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 626256261 is about 25025.1126071393. The cubic root of 626256261 is about 855.5604369136.

It can be divided in two parts, 62625 and 6261, that added together give a palindrome (68886).

The spelling of 626256261 in words is "six hundred twenty-six million, two hundred fifty-six thousand, two hundred sixty-one".