25722611 has 4 divisors (see below), whose sum is σ = 25744032. Its totient is φ = 25701192.

The previous prime is 25722607. The next prime is 25722721. The reversal of 25722611 is 11622752.

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

It is a cyclic number.

It is not a de Polignac number, because 25722611 - 2² = 25722607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25722601) 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, 8795 + ... + 11348.

It is an arithmetic number, because the mean of its divisors is an integer number (6436008).

Almost surely, 2^25722611 is an apocalyptic number.

25722611 is a deficient number, since it is larger than the sum of its proper divisors (21421).

25722611 is a wasteful number, since it uses less digits than its factorization.

25722611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21420.

The product of its digits is 1680, while the sum is 26.

The square root of 25722611 is about 5071.7463461810. The cubic root of 25722611 is about 295.1922944292.

The spelling of 25722611 in words is "twenty-five million, seven hundred twenty-two thousand, six hundred eleven".