25209601 has 8 divisors (see below), whose sum is σ = 25735424. Its totient is φ = 24688800.

The previous prime is 25209593. The next prime is 25209607. The reversal of 25209601 is 10690252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25209601 - 2³ = 25209593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25209607) 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, 9880 + ... + 12166.

It is an arithmetic number, because the mean of its divisors is an integer number (3216928).

Almost surely, 2^25209601 is an apocalyptic number.

It is an amenable number.

25209601 is a deficient number, since it is larger than the sum of its proper divisors (525823).

25209601 is a wasteful number, since it uses less digits than its factorization.

25209601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 25209601 is about 5020.9163506276. The cubic root of 25209601 is about 293.2166700617.

Adding to 25209601 its reverse (10690252), we get a palindrome (35899853).

It can be divided in two parts, 2520 and 9601, that added together give a palindrome (12121).

The spelling of 25209601 in words is "twenty-five million, two hundred nine thousand, six hundred one".