25231606 has 4 divisors (see below), whose sum is σ = 37847412. Its totient is φ = 12615802.

The previous prime is 25231603. The next prime is 25231631. The reversal of 25231606 is 60613252.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25231603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6307900 + ... + 6307903.

It is an arithmetic number, because the mean of its divisors is an integer number (9461853).

Almost surely, 2^25231606 is an apocalyptic number.

25231606 is a deficient number, since it is larger than the sum of its proper divisors (12615806).

25231606 is a wasteful number, since it uses less digits than its factorization.

25231606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12615805.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 25231606 is about 5023.1072057045. The cubic root of 25231606 is about 293.3019597414.

Adding to 25231606 its reverse (60613252), we get a palindrome (85844858).

The spelling of 25231606 in words is "twenty-five million, two hundred thirty-one thousand, six hundred six".