25645748 has 6 divisors (see below), whose sum is σ = 44880066. Its totient is φ = 12822872.

The previous prime is 25645747. The next prime is 25645757. The reversal of 25645748 is 84754652.

It can be written as a sum of positive squares in only one way, i.e., 25623844 + 21904 = 5062^2 + 148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25645747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205715 + ... + 3205722.

It is an arithmetic number, because the mean of its divisors is an integer number (7480011).

Almost surely, 2^25645748 is an apocalyptic number.

It is an amenable number.

25645748 is a deficient number, since it is larger than the sum of its proper divisors (19234318).

25645748 is a wasteful number, since it uses less digits than its factorization.

25645748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6411441 (or 6411439 counting only the distinct ones).

The product of its digits is 268800, while the sum is 41.

The square root of 25645748 is about 5064.1631095374. The cubic root of 25645748 is about 294.8979748692.

The spelling of 25645748 in words is "twenty-five million, six hundred forty-five thousand, seven hundred forty-eight".