25256301401 has 2 divisors, whose sum is σ = 25256301402. Its totient is φ = 25256301400.

The previous prime is 25256301397. The next prime is 25256301407. The reversal of 25256301401 is 10410365252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25201245001 + 55056400 = 158749^2 + 7420^2 .

It is a cyclic number.

It is not a de Polignac number, because 25256301401 - 2² = 25256301397 is a prime.

It is not a weakly prime, because it can be changed into another prime (25256301407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12628150700 + 12628150701.

It is an arithmetic number, because the mean of its divisors is an integer number (12628150701).

Almost surely, 2^25256301401 is an apocalyptic number.

It is an amenable number.

25256301401 is a deficient number, since it is larger than the sum of its proper divisors (1).

25256301401 is an equidigital number, since it uses as much as digits as its factorization.

25256301401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 25256301401 its reverse (10410365252), we get a palindrome (35666666653).

The spelling of 25256301401 in words is "twenty-five billion, two hundred fifty-six million, three hundred one thousand, four hundred one".