25705001 has 4 divisors (see below), whose sum is σ = 29377152. Its totient is φ = 22032852.

The previous prime is 25704977. The next prime is 25705027. The reversal of 25705001 is 10050752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25705001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25705601) 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, 1836065 + ... + 1836078.

It is an arithmetic number, because the mean of its divisors is an integer number (7344288).

Almost surely, 2^25705001 is an apocalyptic number.

It is an amenable number.

25705001 is a deficient number, since it is larger than the sum of its proper divisors (3672151).

25705001 is an equidigital number, since it uses as much as digits as its factorization.

25705001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672150.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 25705001 is about 5070.0099605425. The cubic root of 25705001 is about 295.1249150195.

Adding to 25705001 its reverse (10050752), we get a palindrome (35755753).

The spelling of 25705001 in words is "twenty-five million, seven hundred five thousand, one".