25054431011 has 4 divisors (see below), whose sum is σ = 25204457712. Its totient is φ = 24904404312.

The previous prime is 25054430993. The next prime is 25054431019. The reversal of 25054431011 is 11013445052.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25054431011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25054431019) 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, 75013100 + ... + 75013433.

It is an arithmetic number, because the mean of its divisors is an integer number (6301114428).

Almost surely, 2^25054431011 is an apocalyptic number.

25054431011 is a deficient number, since it is larger than the sum of its proper divisors (150026701).

25054431011 is a wasteful number, since it uses less digits than its factorization.

25054431011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150026700.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 25054431011 its reverse (11013445052), we get a palindrome (36067876063).

The spelling of 25054431011 in words is "twenty-five billion, fifty-four million, four hundred thirty-one thousand, eleven".