25140666 has 16 divisors (see below), whose sum is σ = 50678784. Its totient is φ = 8313984.

The previous prime is 25140641. The next prime is 25140677. The reversal of 25140666 is 66604152.

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, 15735 + ... + 17258.

It is an arithmetic number, because the mean of its divisors is an integer number (3167424).

Almost surely, 2^25140666 is an apocalyptic number.

25140666 is an abundant number, since it is smaller than the sum of its proper divisors (25538118).

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

25140666 is a wasteful number, since it uses less digits than its factorization.

25140666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33125.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 25140666 is about 5014.0468685484. The cubic root of 25140666 is about 292.9491616222.

The spelling of 25140666 in words is "twenty-five million, one hundred forty thousand, six hundred sixty-six".