25343250511 has 4 divisors (see below), whose sum is σ = 26445130992. Its totient is φ = 24241370032.

The previous prime is 25343250469. The next prime is 25343250523. The reversal of 25343250511 is 11505234352.

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 25343250511 - 2²⁹ = 24806379599 is a prime.

It is a super-2 number, since 2×25343250511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25343250211) 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, 550940206 + ... + 550940251.

It is an arithmetic number, because the mean of its divisors is an integer number (6611282748).

Almost surely, 2^25343250511 is an apocalyptic number.

25343250511 is a deficient number, since it is larger than the sum of its proper divisors (1101880481).

25343250511 is a wasteful number, since it uses less digits than its factorization.

25343250511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101880480.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 25343250511 its reverse (11505234352), we get a palindrome (36848484863).

The spelling of 25343250511 in words is "twenty-five billion, three hundred forty-three million, two hundred fifty thousand, five hundred eleven".