25575012 has 36 divisors (see below), whose sum is σ = 64946700. Its totient is φ = 8485632.

The previous prime is 25575001. The next prime is 25575037. The reversal of 25575012 is 21057552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3896676 + 21678336 = 1974^2 + 4656^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6864 + ... + 9912.

It is an arithmetic number, because the mean of its divisors is an integer number (1804075).

Almost surely, 2^25575012 is an apocalyptic number.

It is an amenable number.

25575012 is an abundant number, since it is smaller than the sum of its proper divisors (39371688).

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

25575012 is a wasteful number, since it uses less digits than its factorization.

25575012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292 (or 3287 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 25575012 is about 5057.1743098296. The cubic root of 25575012 is about 294.6265964045.

It can be divided in two parts, 2557 and 5012, that added together give a square (7569 = 87²).

The spelling of 25575012 in words is "twenty-five million, five hundred seventy-five thousand, twelve".