2525666 has 16 divisors (see below), whose sum is σ = 4451328. Its totient is φ = 1059600.

The previous prime is 2525647. The next prime is 2525669. The reversal of 2525666 is 6665252.

It is a super-3 number, since 3×2525666³ = 48333584951946324888, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2525669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4130 + ... + 4701.

It is an arithmetic number, because the mean of its divisors is an integer number (278208).

2^2525666 is an apocalyptic number.

2525666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2525666 is a deficient number, since it is larger than the sum of its proper divisors (1925662).

2525666 is a wasteful number, since it uses less digits than its factorization.

2525666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8857.

The product of its digits is 21600, while the sum is 32.

The square root of 2525666 is about 1589.2344068765. The cubic root of 2525666 is about 136.1837553571.

The spelling of 2525666 in words is "two million, five hundred twenty-five thousand, six hundred sixty-six".