25705412633 has 2 divisors, whose sum is σ = 25705412634. Its totient is φ = 25705412632.

The previous prime is 25705412587. The next prime is 25705412641. The reversal of 25705412633 is 33621450752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18546898969 + 7158513664 = 136187^2 + 84608^2 .

It is a cyclic number.

It is not a de Polignac number, because 25705412633 - 2²⁰ = 25704364057 is a prime.

It is not a weakly prime, because it can be changed into another prime (25705412233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12852706316 + 12852706317.

It is an arithmetic number, because the mean of its divisors is an integer number (12852706317).

Almost surely, 2^25705412633 is an apocalyptic number.

It is an amenable number.

25705412633 is a deficient number, since it is larger than the sum of its proper divisors (1).

25705412633 is an equidigital number, since it uses as much as digits as its factorization.

25705412633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 25705412633 in words is "twenty-five billion, seven hundred five million, four hundred twelve thousand, six hundred thirty-three".