25708236 has 12 divisors (see below), whose sum is σ = 59985912. Its totient is φ = 8569408.

The previous prime is 25708231. The next prime is 25708253. The reversal of 25708236 is 63280752.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 25708197 and 25708206.

It is not an unprimeable number, because it can be changed into a prime (25708231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071165 + ... + 1071188.

It is an arithmetic number, because the mean of its divisors is an integer number (4998826).

Almost surely, 2^25708236 is an apocalyptic number.

It is an amenable number.

25708236 is an abundant number, since it is smaller than the sum of its proper divisors (34277676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25708236 is a wasteful number, since it uses less digits than its factorization.

25708236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142360 (or 2142358 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 25708236 is about 5070.3289834093. The cubic root of 25708236 is about 295.1372950884.

Adding to 25708236 its reverse (63280752), we get a palindrome (88988988).

The spelling of 25708236 in words is "twenty-five million, seven hundred eight thousand, two hundred thirty-six".