25540076551 has 8 divisors (see below), whose sum is σ = 27884697984. Its totient is φ = 23199254520.

The previous prime is 25540076521. The next prime is 25540076557. The reversal of 25540076551 is 15567004552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25540076551 - 2⁹ = 25540076039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25540076557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935781 + ... + 962686.

It is an arithmetic number, because the mean of its divisors is an integer number (3485587248).

Almost surely, 2^25540076551 is an apocalyptic number.

25540076551 is a deficient number, since it is larger than the sum of its proper divisors (2344621433).

25540076551 is a wasteful number, since it uses less digits than its factorization.

25540076551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899701.

The product of its (nonzero) digits is 210000, while the sum is 40.

The spelling of 25540076551 in words is "twenty-five billion, five hundred forty million, seventy-six thousand, five hundred fifty-one".