25993812 has 24 divisors (see below), whose sum is σ = 65318176. Its totient is φ = 7998048.

The previous prime is 25993787. The next prime is 25993817. The reversal of 25993812 is 21839952.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25993817) 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, 83158 + ... + 83469.

Almost surely, 2^25993812 is an apocalyptic number.

It is an amenable number.

25993812 is an abundant number, since it is smaller than the sum of its proper divisors (39324364).

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

25993812 is a wasteful number, since it uses less digits than its factorization.

25993812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166647 (or 166645 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 25993812 is about 5098.4126941628. The cubic root of 25993812 is about 296.2261025072.

The spelling of 25993812 in words is "twenty-five million, nine hundred ninety-three thousand, eight hundred twelve".