2525566 has 4 divisors (see below), whose sum is σ = 3788352. Its totient is φ = 1262782.

The previous prime is 2525557. The next prime is 2525569. The reversal of 2525566 is 6655252.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631390 + ... + 631393.

It is an arithmetic number, because the mean of its divisors is an integer number (947088).

2^2525566 is an apocalyptic number.

2525566 is a deficient number, since it is larger than the sum of its proper divisors (1262786).

2525566 is a wasteful number, since it uses less digits than its factorization.

2525566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262785.

The product of its digits is 18000, while the sum is 31.

The square root of 2525566 is about 1589.2029448752. The cubic root of 2525566 is about 136.1819580021.

The spelling of 2525566 in words is "two million, five hundred twenty-five thousand, five hundred sixty-six".