25620433 has 2 divisors, whose sum is σ = 25620434. Its totient is φ = 25620432.

The previous prime is 25620431. The next prime is 25620443. The reversal of 25620433 is 33402652.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20367169 + 5253264 = 4513^2 + 2292^2 .

It is a cyclic number.

It is not a de Polignac number, because 25620433 - 2¹ = 25620431 is a prime.

Together with 25620431, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25620398 and 25620407.

It is not a weakly prime, because it can be changed into another prime (25620431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12810216 + 12810217.

It is an arithmetic number, because the mean of its divisors is an integer number (12810217).

Almost surely, 2^25620433 is an apocalyptic number.

It is an amenable number.

25620433 is a deficient number, since it is larger than the sum of its proper divisors (1).

25620433 is an equidigital number, since it uses as much as digits as its factorization.

25620433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 25620433 is about 5061.6630666215. The cubic root of 25620433 is about 294.8009113464.

The spelling of 25620433 in words is "twenty-five million, six hundred twenty thousand, four hundred thirty-three".