25645115033 has 2 divisors, whose sum is σ = 25645115034. Its totient is φ = 25645115032.

The previous prime is 25645114939. The next prime is 25645115057. The reversal of 25645115033 is 33051154652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24849423769 + 795691264 = 157637^2 + 28208^2 .

It is a cyclic number.

It is not a de Polignac number, because 25645115033 - 2²⁴ = 25628337817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25645114984 and 25645115002.

It is not a weakly prime, because it can be changed into another prime (25645115063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12822557516 + 12822557517.

It is an arithmetic number, because the mean of its divisors is an integer number (12822557517).

Almost surely, 2^25645115033 is an apocalyptic number.

It is an amenable number.

25645115033 is a deficient number, since it is larger than the sum of its proper divisors (1).

25645115033 is an equidigital number, since it uses as much as digits as its factorization.

25645115033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 25645115033 its reverse (33051154652), we get a palindrome (58696269685).

The spelling of 25645115033 in words is "twenty-five billion, six hundred forty-five million, one hundred fifteen thousand, thirty-three".