25620473 has 2 divisors, whose sum is σ = 25620474. Its totient is φ = 25620472.

The previous prime is 25620461. The next prime is 25620481. The reversal of 25620473 is 37402652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14684224 + 10936249 = 3832^2 + 3307^2 .

It is a cyclic number.

It is not a de Polignac number, because 25620473 - 2⁶ = 25620409 is a prime.

It is not a weakly prime, because it can be changed into another prime (25620403) 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, 12810236 + 12810237.

It is an arithmetic number, because the mean of its divisors is an integer number (12810237).

Almost surely, 2^25620473 is an apocalyptic number.

It is an amenable number.

25620473 is a deficient number, since it is larger than the sum of its proper divisors (1).

25620473 is an equidigital number, since it uses as much as digits as its factorization.

25620473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 25620473 is about 5061.6670178904. The cubic root of 25620473 is about 294.8010647661.

The spelling of 25620473 in words is "twenty-five million, six hundred twenty thousand, four hundred seventy-three".