25859358601 has 2 divisors, whose sum is σ = 25859358602. Its totient is φ = 25859358600.

The previous prime is 25859358559. The next prime is 25859358641. The reversal of 25859358601 is 10685395852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25726556025 + 132802576 = 160395^2 + 11524^2 .

It is a cyclic number.

It is not a de Polignac number, because 25859358601 - 2²¹ = 25857261449 is a prime.

It is a super-2 number, since 2×25859358601² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25859358641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12929679300 + 12929679301.

It is an arithmetic number, because the mean of its divisors is an integer number (12929679301).

Almost surely, 2^25859358601 is an apocalyptic number.

It is an amenable number.

25859358601 is a deficient number, since it is larger than the sum of its proper divisors (1).

25859358601 is an equidigital number, since it uses as much as digits as its factorization.

25859358601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 52.

The spelling of 25859358601 in words is "twenty-five billion, eight hundred fifty-nine million, three hundred fifty-eight thousand, six hundred one".