25855012 has 6 divisors (see below), whose sum is σ = 45246278. Its totient is φ = 12927504.

The previous prime is 25855009. The next prime is 25855019. The reversal of 25855012 is 21055852.

It can be written as a sum of positive squares in only one way, i.e., 13351716 + 12503296 = 3654^2 + 3536^2 .

It is not an unprimeable number, because it can be changed into a prime (25855019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3231873 + ... + 3231880.

Almost surely, 2^25855012 is an apocalyptic number.

It is an amenable number.

25855012 is a deficient number, since it is larger than the sum of its proper divisors (19391266).

25855012 is a wasteful number, since it uses less digits than its factorization.

25855012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6463757 (or 6463755 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 25855012 is about 5084.7823945573. The cubic root of 25855012 is about 295.6979052059.

The spelling of 25855012 in words is "twenty-five million, eight hundred fifty-five thousand, twelve".