25801520162027 has 2 divisors, whose sum is σ = 25801520162028. Its totient is φ = 25801520162026.

The previous prime is 25801520161993. The next prime is 25801520162053. The reversal of 25801520162027 is 72026102510852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25801520162027 - 2⁸ = 25801520161771 is a prime.

It is not a weakly prime, because it can be changed into another prime (25801520162927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12900760081013 + 12900760081014.

It is an arithmetic number, because the mean of its divisors is an integer number (12900760081014).

Almost surely, 2^{25801520162027} is an apocalyptic number.

25801520162027 is a deficient number, since it is larger than the sum of its proper divisors (1).

25801520162027 is an equidigital number, since it uses as much as digits as its factorization.

25801520162027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 41.

Adding to 25801520162027 its reverse (72026102510852), we get a palindrome (97827622672879).

The spelling of 25801520162027 in words is "twenty-five trillion, eight hundred one billion, five hundred twenty million, one hundred sixty-two thousand, twenty-seven".