525994192661 has 8 divisors (see below), whose sum is σ = 602774196480. Its totient is φ = 449623682928.

The previous prime is 525994192639. The next prime is 525994192673. The reversal of 525994192661 is 166291499525.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-525994192661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525994192661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525994192601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102370766 + ... + 102375903.

It is an arithmetic number, because the mean of its divisors is an integer number (75346774560).

Almost surely, 2^525994192661 is an apocalyptic number.

It is an amenable number.

525994192661 is a deficient number, since it is larger than the sum of its proper divisors (76780003819).

525994192661 is a wasteful number, since it uses less digits than its factorization.

525994192661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204747043.

The product of its digits is 10497600, while the sum is 59.

The spelling of 525994192661 in words is "five hundred twenty-five billion, nine hundred ninety-four million, one hundred ninety-two thousand, six hundred sixty-one".