25690868 has 36 divisors (see below), whose sum is σ = 53263392. Its totient is φ = 10620960.

The previous prime is 25690843. The next prime is 25690877. The reversal of 25690868 is 86809652.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23003 + ... + 24093.

Almost surely, 2^25690868 is an apocalyptic number.

25690868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25690868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26631696).

25690868 is an abundant number, since it is smaller than the sum of its proper divisors (27572524).

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

25690868 is a wasteful number, since it uses less digits than its factorization.

25690868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 25690868 is about 5068.6159846648. The cubic root of 25690868 is about 295.0708170500.

The spelling of 25690868 in words is "twenty-five million, six hundred ninety thousand, eight hundred sixty-eight".