25696564 has 6 divisors (see below), whose sum is σ = 44968994. Its totient is φ = 12848280.

The previous prime is 25696549. The next prime is 25696597. The reversal of 25696564 is 46569652.

It can be written as a sum of positive squares in only one way, i.e., 16875664 + 8820900 = 4108^2 + 2970^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25696564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3212067 + ... + 3212074.

Almost surely, 2^25696564 is an apocalyptic number.

It is an amenable number.

25696564 is a deficient number, since it is larger than the sum of its proper divisors (19272430).

25696564 is a wasteful number, since it uses less digits than its factorization.

25696564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424145 (or 6424143 counting only the distinct ones).

The product of its digits is 388800, while the sum is 43.

The square root of 25696564 is about 5069.1778426092. The cubic root of 25696564 is about 295.0926224528.

The spelling of 25696564 in words is "twenty-five million, six hundred ninety-six thousand, five hundred sixty-four".