525466664525 has 12 divisors (see below), whose sum is σ = 710813088384. Its totient is φ = 382157574000.

The previous prime is 525466664521. The next prime is 525466664531.

525466664525 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 525466664525 - 2² = 525466664521 is a prime.

It is a super-2 number, since 2×525466664525² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525466664521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 955393661 + ... + 955394210.

It is an arithmetic number, because the mean of its divisors is an integer number (59234424032).

Almost surely, 2^525466664525 is an apocalyptic number.

525466664525 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

525466664525 is a deficient number, since it is larger than the sum of its proper divisors (185346423859).

525466664525 is a wasteful number, since it uses less digits than its factorization.

525466664525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910787892 (or 1910787887 counting only the distinct ones).

The product of its digits is 51840000, while the sum is 56.

The spelling of 525466664525 in words is "five hundred twenty-five billion, four hundred sixty-six million, six hundred sixty-four thousand, five hundred twenty-five".