25011051211 has 4 divisors (see below), whose sum is σ = 25013220232. Its totient is φ = 25008882192.

The previous prime is 25011051181. The next prime is 25011051313. The reversal of 25011051211 is 11215011052.

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 25011051211 - 2⁹ = 25011050699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25011051811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067121 + ... + 1090306.

It is an arithmetic number, because the mean of its divisors is an integer number (6253305058).

Almost surely, 2^25011051211 is an apocalyptic number.

25011051211 is a deficient number, since it is larger than the sum of its proper divisors (2169021).

25011051211 is a wasteful number, since it uses less digits than its factorization.

25011051211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169020.

The product of its (nonzero) digits is 100, while the sum is 19.

Adding to 25011051211 its reverse (11215011052), we get a palindrome (36226062263).

The spelling of 25011051211 in words is "twenty-five billion, eleven million, fifty-one thousand, two hundred eleven".