25747506640511 has 4 divisors (see below), whose sum is σ = 26866963450992. Its totient is φ = 24628049830032.

The previous prime is 25747506640507. The next prime is 25747506640517. The reversal of 25747506640511 is 11504660574752.

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 25747506640511 - 2² = 25747506640507 is a prime.

It is a super-2 number, since 2×25747506640511² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25747506640517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559728405206 + ... + 559728405251.

It is an arithmetic number, because the mean of its divisors is an integer number (6716740862748).

Almost surely, 2^{25747506640511} is an apocalyptic number.

25747506640511 is a deficient number, since it is larger than the sum of its proper divisors (1119456810481).

25747506640511 is a wasteful number, since it uses less digits than its factorization.

25747506640511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119456810480.

The product of its (nonzero) digits is 7056000, while the sum is 53.

The spelling of 25747506640511 in words is "twenty-five trillion, seven hundred forty-seven billion, five hundred six million, six hundred forty thousand, five hundred eleven".