2556252401 has 2 divisors, whose sum is σ = 2556252402. Its totient is φ = 2556252400.

The previous prime is 2556252389. The next prime is 2556252409. The reversal of 2556252401 is 1042526552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2116092001 + 440160400 = 46001^2 + 20980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2556252401 - 2¹⁰ = 2556251377 is a prime.

It is not a weakly prime, because it can be changed into another prime (2556252409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278126200 + 1278126201.

It is an arithmetic number, because the mean of its divisors is an integer number (1278126201).

Almost surely, 2^2556252401 is an apocalyptic number.

It is an amenable number.

2556252401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556252401 is an equidigital number, since it uses as much as digits as its factorization.

2556252401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 2556252401 is about 50559.3947847480. The cubic root of 2556252401 is about 1367.3128996596.

Adding to 2556252401 its reverse (1042526552), we get a palindrome (3598778953).

The spelling of 2556252401 in words is "two billion, five hundred fifty-six million, two hundred fifty-two thousand, four hundred one".