5256646401 has 16 divisors (see below), whose sum is σ = 7253544960. Its totient is φ = 3382189440.

The previous prime is 5256646393. The next prime is 5256646411. The reversal of 5256646401 is 1046466525.

It is not a de Polignac number, because 5256646401 - 2³ = 5256646393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5256646401.

It is not an unprimeable number, because it can be changed into a prime (5256646411) 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 in 15 ways as a sum of consecutive naturals, for example, 224896 + ... + 247166.

It is an arithmetic number, because the mean of its divisors is an integer number (453346560).

Almost surely, 2^5256646401 is an apocalyptic number.

It is an amenable number.

5256646401 is a deficient number, since it is larger than the sum of its proper divisors (1996898559).

5256646401 is a wasteful number, since it uses less digits than its factorization.

5256646401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25016.

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 5256646401 is about 72502.7337484594. The cubic root of 5256646401 is about 1738.7464438550.

The spelling of 5256646401 in words is "five billion, two hundred fifty-six million, six hundred forty-six thousand, four hundred one".