25667559 has 6 divisors (see below), whose sum is σ = 37075376. Its totient is φ = 17111700.

The previous prime is 25667557. The next prime is 25667561. The reversal of 25667559 is 95576652.

It is an interprime number because it is at equal distance from previous prime (25667557) and next prime (25667561).

It is not a de Polignac number, because 25667559 - 2¹ = 25667557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25667557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1425967 + ... + 1425984.

Almost surely, 2^25667559 is an apocalyptic number.

25667559 is a deficient number, since it is larger than the sum of its proper divisors (11407817).

25667559 is a wasteful number, since it uses less digits than its factorization.

25667559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851957 (or 2851954 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 25667559 is about 5066.3161172592. The cubic root of 25667559 is about 294.9815520399.

The spelling of 25667559 in words is "twenty-five million, six hundred sixty-seven thousand, five hundred fifty-nine".