25906986 has 48 divisors (see below), whose sum is σ = 66977280. Its totient is φ = 7401240.

The previous prime is 25906973. The next prime is 25906987. The reversal of 25906986 is 68960952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25906987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2250 + ... + 7541.

It is an arithmetic number, because the mean of its divisors is an integer number (1395360).

Almost surely, 2^25906986 is an apocalyptic number.

25906986 is an abundant number, since it is smaller than the sum of its proper divisors (41070294).

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

25906986 is a wasteful number, since it uses less digits than its factorization.

25906986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9816 (or 9803 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 25906986 is about 5089.8905685682. The cubic root of 25906986 is about 295.8959108688.

The spelling of 25906986 in words is "twenty-five million, nine hundred six thousand, nine hundred eighty-six".