25066660 has 12 divisors (see below), whose sum is σ = 52640028. Its totient is φ = 10026656.

The previous prime is 25066633. The next prime is 25066663. The reversal of 25066660 is 6666052.

It can be written as a sum of positive squares in 2 ways, for example, as 10074276 + 14992384 = 3174^2 + 3872^2 .

It is not an unprimeable number, because it can be changed into a prime (25066663) 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, 626647 + ... + 626686.

It is an arithmetic number, because the mean of its divisors is an integer number (4386669).

Almost surely, 2^25066660 is an apocalyptic number.

25066660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25066660 is an abundant number, since it is smaller than the sum of its proper divisors (27573368).

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

25066660 is a wasteful number, since it uses less digits than its factorization.

25066660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253342 (or 1253340 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 25066660 is about 5006.6615623587. The cubic root of 25066660 is about 292.6614298721.

The spelling of 25066660 in words is "twenty-five million, sixty-six thousand, six hundred sixty".