25665052 has 24 divisors (see below), whose sum is σ = 51609600. Its totient is φ = 10939440.

The previous prime is 25665047. The next prime is 25665071. The reversal of 25665052 is 25056652.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2949 + ... + 7747.

It is an arithmetic number, because the mean of its divisors is an integer number (2150400).

Almost surely, 2^25665052 is an apocalyptic number.

It is an amenable number.

25665052 is an abundant number, since it is smaller than the sum of its proper divisors (25944548).

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

25665052 is a wasteful number, since it uses less digits than its factorization.

25665052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001 (or 4999 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 25665052 is about 5066.0686927834. The cubic root of 25665052 is about 294.9719479215.

Subtracting from 25665052 its reverse (25056652), we obtain a square (608400 = 780²).

The spelling of 25665052 in words is "twenty-five million, six hundred sixty-five thousand, fifty-two".