25425021233 has 2 divisors, whose sum is σ = 25425021234. Its totient is φ = 25425021232.

The previous prime is 25425021199. The next prime is 25425021257. The reversal of 25425021233 is 33212052452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17833732849 + 7591288384 = 133543^2 + 87128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25425021233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25425021196 and 25425021205.

It is not a weakly prime, because it can be changed into another prime (25425021283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12712510616 + 12712510617.

It is an arithmetic number, because the mean of its divisors is an integer number (12712510617).

Almost surely, 2^25425021233 is an apocalyptic number.

It is an amenable number.

25425021233 is a deficient number, since it is larger than the sum of its proper divisors (1).

25425021233 is an equidigital number, since it uses as much as digits as its factorization.

25425021233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 25425021233 its reverse (33212052452), we get a palindrome (58637073685).

The spelling of 25425021233 in words is "twenty-five billion, four hundred twenty-five million, twenty-one thousand, two hundred thirty-three".