25566472 has 8 divisors (see below), whose sum is σ = 47937150. Its totient is φ = 12783232.

The previous prime is 25566469. The next prime is 25566479. The reversal of 25566472 is 27466552.

It can be written as a sum of positive squares in only one way, i.e., 20304036 + 5262436 = 4506^2 + 2294^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25566479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1597897 + ... + 1597912.

Almost surely, 2^25566472 is an apocalyptic number.

It is an amenable number.

25566472 is a deficient number, since it is larger than the sum of its proper divisors (22370678).

25566472 is a wasteful number, since it uses less digits than its factorization.

25566472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195815 (or 3195811 counting only the distinct ones).

The product of its digits is 100800, while the sum is 37.

The square root of 25566472 is about 5056.3298943008. The cubic root of 25566472 is about 294.5937988800.

The spelling of 25566472 in words is "twenty-five million, five hundred sixty-six thousand, four hundred seventy-two".