25644057 has 16 divisors (see below), whose sum is σ = 35804160. Its totient is φ = 16295312.

The previous prime is 25644043. The next prime is 25644061. The reversal of 25644057 is 75044652.

It is a cyclic number.

It is not a de Polignac number, because 25644057 - 2¹⁶ = 25578521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25644067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28468 + ... + 29354.

It is an arithmetic number, because the mean of its divisors is an integer number (2237760).

Almost surely, 2^25644057 is an apocalyptic number.

It is an amenable number.

25644057 is a deficient number, since it is larger than the sum of its proper divisors (10160103).

25644057 is a wasteful number, since it uses less digits than its factorization.

25644057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 25644057 is about 5063.9961492876. The cubic root of 25644057 is about 294.8914931783.

The spelling of 25644057 in words is "twenty-five million, six hundred forty-four thousand, fifty-seven".