25770666 has 16 divisors (see below), whose sum is σ = 51674688. Its totient is φ = 8568000.

The previous prime is 25770643. The next prime is 25770697. The reversal of 25770666 is 66607752.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2950 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (3229668).

Almost surely, 2^25770666 is an apocalyptic number.

25770666 is an abundant number, since it is smaller than the sum of its proper divisors (25904022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25770666 is a wasteful number, since it uses less digits than its factorization.

25770666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11117.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 25770666 is about 5076.4816556351. The cubic root of 25770666 is about 295.3760062240.

The spelling of 25770666 in words is "twenty-five million, seven hundred seventy thousand, six hundred sixty-six".