25575668 has 6 divisors (see below), whose sum is σ = 44757426. Its totient is φ = 12787832.

The previous prime is 25575637. The next prime is 25575673. The reversal of 25575668 is 86657552.

It can be written as a sum of positive squares in only one way, i.e., 15665764 + 9909904 = 3958^2 + 3148^2 .

It is a super-2 number, since 2×25575668² = 1308229587292448, which contains 22 as substring.

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, 3196955 + ... + 3196962.

It is an arithmetic number, because the mean of its divisors is an integer number (7459571).

Almost surely, 2^25575668 is an apocalyptic number.

It is an amenable number.

25575668 is a deficient number, since it is larger than the sum of its proper divisors (19181758).

25575668 is a wasteful number, since it uses less digits than its factorization.

25575668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393921 (or 6393919 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

The square root of 25575668 is about 5057.2391677673. The cubic root of 25575668 is about 294.6291154439.

The spelling of 25575668 in words is "twenty-five million, five hundred seventy-five thousand, six hundred sixty-eight".