525540663451 has 4 divisors (see below), whose sum is σ = 525568329400. Its totient is φ = 525512997504.

The previous prime is 525540663413. The next prime is 525540663457. The reversal of 525540663451 is 154366045525.

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 525540663451 - 2¹¹ = 525540661403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525540663457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13804461 + ... + 13842478.

It is an arithmetic number, because the mean of its divisors is an integer number (131392082350).

Almost surely, 2^525540663451 is an apocalyptic number.

525540663451 is a deficient number, since it is larger than the sum of its proper divisors (27665949).

525540663451 is a wasteful number, since it uses less digits than its factorization.

525540663451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27665948.

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 525540663451 in words is "five hundred twenty-five billion, five hundred forty million, six hundred sixty-three thousand, four hundred fifty-one".