25540510532077 has 2 divisors, whose sum is σ = 25540510532078. Its totient is φ = 25540510532076.

The previous prime is 25540510532039. The next prime is 25540510532081. The reversal of 25540510532077 is 77023501504552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24215315860836 + 1325194671241 = 4920906^2 + 1151171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25540510532077 is a prime.

It is a super-3 number, since 3×25540510532077³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25540510532377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12770255266038 + 12770255266039.

It is an arithmetic number, because the mean of its divisors is an integer number (12770255266039).

Almost surely, 2^{25540510532077} is an apocalyptic number.

It is an amenable number.

25540510532077 is a deficient number, since it is larger than the sum of its proper divisors (1).

25540510532077 is an equidigital number, since it uses as much as digits as its factorization.

25540510532077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470000, while the sum is 46.

The spelling of 25540510532077 in words is "twenty-five trillion, five hundred forty billion, five hundred ten million, five hundred thirty-two thousand, seventy-seven".