25620461 has 2 divisors, whose sum is σ = 25620462. Its totient is φ = 25620460.

The previous prime is 25620443. The next prime is 25620473. The reversal of 25620461 is 16402652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21104836 + 4515625 = 4594^2 + 2125^2 .

It is a cyclic number.

It is not a de Polignac number, because 25620461 - 2¹⁰ = 25619437 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25620461.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12810230 + 12810231.

It is an arithmetic number, because the mean of its divisors is an integer number (12810231).

Almost surely, 2^25620461 is an apocalyptic number.

It is an amenable number.

25620461 is a deficient number, since it is larger than the sum of its proper divisors (1).

25620461 is an equidigital number, since it uses as much as digits as its factorization.

25620461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 25620461 is about 5061.6658325101. The cubic root of 25620461 is about 294.8010187402.

The spelling of 25620461 in words is "twenty-five million, six hundred twenty thousand, four hundred sixty-one".