25886988 has 36 divisors (see below), whose sum is σ = 69287400. Its totient is φ = 8121216.

The previous prime is 25886981. The next prime is 25887011. The reversal of 25886988 is 88968852.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×25886988² = 1340272295424288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25886981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20538 + ... + 21761.

It is an arithmetic number, because the mean of its divisors is an integer number (1924650).

Almost surely, 2^25886988 is an apocalyptic number.

It is an amenable number.

25886988 is an abundant number, since it is smaller than the sum of its proper divisors (43400412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25886988 is a wasteful number, since it uses less digits than its factorization.

25886988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42326 (or 42321 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The square root of 25886988 is about 5087.9257070048. The cubic root of 25886988 is about 295.8197557391.

The spelling of 25886988 in words is "twenty-five million, eight hundred eighty-six thousand, nine hundred eighty-eight".