25891212 has 24 divisors (see below), whose sum is σ = 61316416. Its totient is φ = 8501328.

The previous prime is 25891211. The next prime is 25891241. The reversal of 25891212 is 21219852.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25891212.

It is not an unprimeable number, because it can be changed into a prime (25891211) 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, 15298 + ... + 16905.

Almost surely, 2^25891212 is an apocalyptic number.

It is an amenable number.

25891212 is an abundant number, since it is smaller than the sum of its proper divisors (35425204).

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

25891212 is a wasteful number, since it uses less digits than its factorization.

25891212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32277 (or 32275 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 25891212 is about 5088.3407904738. The cubic root of 25891212 is about 295.8358445774.

The spelling of 25891212 in words is "twenty-five million, eight hundred ninety-one thousand, two hundred twelve".