25722012 has 12 divisors (see below), whose sum is σ = 60018056. Its totient is φ = 8574000.

The previous prime is 25721999. The next prime is 25722023. The reversal of 25722012 is 21022752.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25722012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071739 + ... + 1071762.

Almost surely, 2^25722012 is an apocalyptic number.

It is an amenable number.

25722012 is an abundant number, since it is smaller than the sum of its proper divisors (34296044).

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

25722012 is a wasteful number, since it uses less digits than its factorization.

25722012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143508 (or 2143506 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 25722012 is about 5071.6872931994. The cubic root of 25722012 is about 295.1900030398.

Adding to 25722012 its reverse (21022752), we get a palindrome (46744764).

The spelling of 25722012 in words is "twenty-five million, seven hundred twenty-two thousand, twelve".