25064666 has 12 divisors (see below), whose sum is σ = 41326026. Its totient is φ = 11392920.

The previous prime is 25064639. The next prime is 25064693. The reversal of 25064666 is 66646052.

It is an interprime number because it is at equal distance from previous prime (25064639) and next prime (25064693).

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 14641 = 5005^2 + 121^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51545 + ... + 52028.

Almost surely, 2^25064666 is an apocalyptic number.

25064666 is a deficient number, since it is larger than the sum of its proper divisors (16261360).

25064666 is a wasteful number, since it uses less digits than its factorization.

25064666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103597 (or 103586 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 25064666 is about 5006.4624237080. The cubic root of 25064666 is about 292.6536694663.

The spelling of 25064666 in words is "twenty-five million, sixty-four thousand, six hundred sixty-six".