25859352457 has 2 divisors, whose sum is σ = 25859352458. Its totient is φ = 25859352456.

The previous prime is 25859352413. The next prime is 25859352527. The reversal of 25859352457 is 75425395852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25305173776 + 554178681 = 159076^2 + 23541^2 .

It is a cyclic number.

It is not a de Polignac number, because 25859352457 - 2¹⁹ = 25858828169 is a prime.

It is a super-2 number, since 2×25859352457² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25859352398 and 25859352407.

It is not a weakly prime, because it can be changed into another prime (25859352557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12929676228 + 12929676229.

It is an arithmetic number, because the mean of its divisors is an integer number (12929676229).

Almost surely, 2^25859352457 is an apocalyptic number.

It is an amenable number.

25859352457 is a deficient number, since it is larger than the sum of its proper divisors (1).

25859352457 is an equidigital number, since it uses as much as digits as its factorization.

25859352457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120000, while the sum is 55.

The spelling of 25859352457 in words is "twenty-five billion, eight hundred fifty-nine million, three hundred fifty-two thousand, four hundred fifty-seven".