25640084 has 12 divisors (see below), whose sum is σ = 45016608. Its totient is φ = 12778200.

The previous prime is 25640081. The next prime is 25640171. The reversal of 25640084 is 48004652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25640081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9062 + ... + 11549.

It is an arithmetic number, because the mean of its divisors is an integer number (3751384).

Almost surely, 2^25640084 is an apocalyptic number.

It is an amenable number.

25640084 is a deficient number, since it is larger than the sum of its proper divisors (19376524).

25640084 is a wasteful number, since it uses less digits than its factorization.

25640084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20926 (or 20924 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 25640084 is about 5063.6038549634. The cubic root of 25640084 is about 294.8762633415.

The spelling of 25640084 in words is "twenty-five million, six hundred forty thousand, eighty-four".