25385567 has 2 divisors, whose sum is σ = 25385568. Its totient is φ = 25385566.

The previous prime is 25385561. The next prime is 25385587. The reversal of 25385567 is 76558352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25385567 - 2¹⁰ = 25384543 is a prime.

It is a super-2 number, since 2×25385567² = 1288854023822978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25385561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12692783 + 12692784.

It is an arithmetic number, because the mean of its divisors is an integer number (12692784).

Almost surely, 2^25385567 is an apocalyptic number.

25385567 is a deficient number, since it is larger than the sum of its proper divisors (1).

25385567 is an equidigital number, since it uses as much as digits as its factorization.

25385567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 41.

The square root of 25385567 is about 5038.4091735388. The cubic root of 25385567 is about 293.8973178676.

It can be divided in two parts, 25385 and 567, that added together give a palindrome (25952).

The spelling of 25385567 in words is "twenty-five million, three hundred eighty-five thousand, five hundred sixty-seven".