25504513841 has 2 divisors, whose sum is σ = 25504513842. Its totient is φ = 25504513840.

The previous prime is 25504513807. The next prime is 25504513849. The reversal of 25504513841 is 14831540552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23384832241 + 2119681600 = 152921^2 + 46040^2 .

It is a cyclic number.

It is not a de Polignac number, because 25504513841 - 2¹⁴ = 25504497457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25504513795 and 25504513804.

It is not a weakly prime, because it can be changed into another prime (25504513849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752256920 + 12752256921.

It is an arithmetic number, because the mean of its divisors is an integer number (12752256921).

Almost surely, 2^25504513841 is an apocalyptic number.

It is an amenable number.

25504513841 is a deficient number, since it is larger than the sum of its proper divisors (1).

25504513841 is an equidigital number, since it uses as much as digits as its factorization.

25504513841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 25504513841 in words is "twenty-five billion, five hundred four million, five hundred thirteen thousand, eight hundred forty-one".