25885669 has 2 divisors, whose sum is σ = 25885670. Its totient is φ = 25885668.

The previous prime is 25885663. The next prime is 25885687. The reversal of 25885669 is 96658852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25877569 + 8100 = 5087^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 25885669 - 2²³ = 17497061 is a prime.

It is a super-2 number, since 2×25885669² = 1340135719155122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25885663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12942834 + 12942835.

It is an arithmetic number, because the mean of its divisors is an integer number (12942835).

Almost surely, 2^25885669 is an apocalyptic number.

It is an amenable number.

25885669 is a deficient number, since it is larger than the sum of its proper divisors (1).

25885669 is an equidigital number, since it uses as much as digits as its factorization.

25885669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 49.

The square root of 25885669 is about 5087.7960847503. The cubic root of 25885669 is about 295.8147314275.

The spelling of 25885669 in words is "twenty-five million, eight hundred eighty-five thousand, six hundred sixty-nine".