25870936 has 32 divisors (see below), whose sum is σ = 59703840. Its totient is φ = 10234368.

The previous prime is 25870891. The next prime is 25870937. The reversal of 25870936 is 63907852.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25870937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17041 + ... + 18496.

It is an arithmetic number, because the mean of its divisors is an integer number (1865745).

Almost surely, 2^25870936 is an apocalyptic number.

25870936 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25870936 is an abundant number, since it is smaller than the sum of its proper divisors (33832904).

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

25870936 is a wasteful number, since it uses less digits than its factorization.

25870936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35563 (or 35559 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 25870936 is about 5086.3480022507. The cubic root of 25870936 is about 295.7585991387.

The spelling of 25870936 in words is "twenty-five million, eight hundred seventy thousand, nine hundred thirty-six".