25485666 has 8 divisors (see below), whose sum is σ = 50971344. Its totient is φ = 8495220.

The previous prime is 25485623. The next prime is 25485667. The reversal of 25485666 is 66658452.

It is a sphenic number, since it is the product of 3 distinct primes.

25485666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (25485667) 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, 2123800 + ... + 2123811.

It is an arithmetic number, because the mean of its divisors is an integer number (6371418).

Almost surely, 2^25485666 is an apocalyptic number.

25485666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25485666 is a wasteful number, since it uses less digits than its factorization.

25485666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247616.

The product of its digits is 345600, while the sum is 42.

The square root of 25485666 is about 5048.3329921866. The cubic root of 25485666 is about 294.2831045960.

The spelling of 25485666 in words is "twenty-five million, four hundred eighty-five thousand, six hundred sixty-six".