25700011 has 6 divisors (see below), whose sum is σ = 25896012. Its totient is φ = 25504920.

The previous prime is 25699969. The next prime is 25700033. The reversal of 25700011 is 11000752.

It is not a de Polignac number, because 25700011 - 2¹¹ = 25697963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25700041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73465 + ... + 73813.

It is an arithmetic number, because the mean of its divisors is an integer number (4316002).

Almost surely, 2^25700011 is an apocalyptic number.

25700011 is a deficient number, since it is larger than the sum of its proper divisors (196001).

25700011 is an frugal number, since it uses more digits than its factorization.

25700011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 25700011 is about 5069.5178271705. The cubic root of 25700011 is about 295.1058166784.

Adding to 25700011 its reverse (11000752), we get a palindrome (36700763).

The spelling of 25700011 in words is "twenty-five million, seven hundred thousand, eleven".