25662116 has 6 divisors (see below), whose sum is σ = 44908710. Its totient is φ = 12831056.

The previous prime is 25662113. The next prime is 25662137. The reversal of 25662116 is 61126652.

It can be written as a sum of positive squares in only one way, i.e., 24049216 + 1612900 = 4904^2 + 1270^2 .

It is not an unprimeable number, because it can be changed into a prime (25662113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3207761 + ... + 3207768.

It is an arithmetic number, because the mean of its divisors is an integer number (7484785).

Almost surely, 2^25662116 is an apocalyptic number.

It is an amenable number.

25662116 is a deficient number, since it is larger than the sum of its proper divisors (19246594).

25662116 is a wasteful number, since it uses less digits than its factorization.

25662116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6415533 (or 6415531 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 25662116 is about 5065.7789134545. The cubic root of 25662116 is about 294.9606995429.

Adding to 25662116 its reverse (61126652), we get a palindrome (86788768).

It can be divided in two parts, 25662 and 116, that multiplied together give a palindrome (2976792).

The spelling of 25662116 in words is "twenty-five million, six hundred sixty-two thousand, one hundred sixteen".