25405430411 has 4 divisors (see below), whose sum is σ = 26899867512. Its totient is φ = 23910993312.

The previous prime is 25405430399. The next prime is 25405430417. The reversal of 25405430411 is 11403450452.

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-25405430411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25405430417) 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, 747218525 + ... + 747218558.

It is an arithmetic number, because the mean of its divisors is an integer number (6724966878).

Almost surely, 2^25405430411 is an apocalyptic number.

25405430411 is a deficient number, since it is larger than the sum of its proper divisors (1494437101).

25405430411 is a wasteful number, since it uses less digits than its factorization.

25405430411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494437100.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 25405430411 its reverse (11403450452), we get a palindrome (36808880863).

The spelling of 25405430411 in words is "twenty-five billion, four hundred five million, four hundred thirty thousand, four hundred eleven".