25678573 has 2 divisors, whose sum is σ = 25678574. Its totient is φ = 25678572.

The previous prime is 25678567. The next prime is 25678577. The reversal of 25678573 is 37587652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23941449 + 1737124 = 4893^2 + 1318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25678573 is a prime.

It is a super-2 number, since 2×25678573² = 1318778222632658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25678577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12839286 + 12839287.

It is an arithmetic number, because the mean of its divisors is an integer number (12839287).

Almost surely, 2^25678573 is an apocalyptic number.

It is an amenable number.

25678573 is a deficient number, since it is larger than the sum of its proper divisors (1).

25678573 is an equidigital number, since it uses as much as digits as its factorization.

25678573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 43.

The square root of 25678573 is about 5067.4029837778. The cubic root of 25678573 is about 295.0237383943.

The spelling of 25678573 in words is "twenty-five million, six hundred seventy-eight thousand, five hundred seventy-three".