25020566 has 16 divisors (see below), whose sum is σ = 39833856. Its totient is φ = 11746176.

The previous prime is 25020563. The next prime is 25020571. The reversal of 25020566 is 66502052.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25020563) 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, 22475 + ... + 23561.

It is an arithmetic number, because the mean of its divisors is an integer number (2489616).

Almost surely, 2^25020566 is an apocalyptic number.

25020566 is a deficient number, since it is larger than the sum of its proper divisors (14813290).

25020566 is a wasteful number, since it uses less digits than its factorization.

25020566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 25020566 is about 5002.0561772135. The cubic root of 25020566 is about 292.4819323098.

The spelling of 25020566 in words is "twenty-five million, twenty thousand, five hundred sixty-six".