25673660 has 12 divisors (see below), whose sum is σ = 53914728. Its totient is φ = 10269456.

The previous prime is 25673653. The next prime is 25673699. The reversal of 25673660 is 6637652.

It is a self number, because there is not a number n which added to its sum of digits gives 25673660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641822 + ... + 641861.

It is an arithmetic number, because the mean of its divisors is an integer number (4492894).

Almost surely, 2^25673660 is an apocalyptic number.

25673660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25673660 is an abundant number, since it is smaller than the sum of its proper divisors (28241068).

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

25673660 is a wasteful number, since it uses less digits than its factorization.

25673660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283692 (or 1283690 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 25673660 is about 5066.9181955110. The cubic root of 25673660 is about 295.0049218752.

The spelling of 25673660 in words is "twenty-five million, six hundred seventy-three thousand, six hundred sixty".