525345661 has 8 divisors (see below), whose sum is σ = 528681600. Its totient is φ = 522019680.

The previous prime is 525345641. The next prime is 525345671. The reversal of 525345661 is 166543525.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525345661 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 525345661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525345641) 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, 122410 + ... + 126628.

It is an arithmetic number, because the mean of its divisors is an integer number (66085200).

Almost surely, 2^525345661 is an apocalyptic number.

It is an amenable number.

525345661 is a deficient number, since it is larger than the sum of its proper divisors (3335939).

525345661 is a wasteful number, since it uses less digits than its factorization.

525345661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979.

The product of its digits is 108000, while the sum is 37.

The square root of 525345661 is about 22920.4201750317. The cubic root of 525345661 is about 806.8913315860.

The spelling of 525345661 in words is "five hundred twenty-five million, three hundred forty-five thousand, six hundred sixty-one".