25805412 has 24 divisors (see below), whose sum is σ = 66903200. Its totient is φ = 8601768.

The previous prime is 25805411. The next prime is 25805413. The reversal of 25805412 is 21450852.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25805411) and next prime (25805413).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25805411) 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, 119362 + ... + 119577.

Almost surely, 2^25805412 is an apocalyptic number.

It is an amenable number.

25805412 is an abundant number, since it is smaller than the sum of its proper divisors (41097788).

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

25805412 is a wasteful number, since it uses less digits than its factorization.

25805412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238952 (or 238944 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 25805412 is about 5079.9027549747. The cubic root of 25805412 is about 295.5086961805.

The spelling of 25805412 in words is "twenty-five million, eight hundred five thousand, four hundred twelve".