525520253350221 has 8 divisors (see below), whose sum is σ = 709563211274880. Its totient is φ = 345912065496192.

The previous prime is 525520253350219. The next prime is 525520253350243. The reversal of 525520253350221 is 122053352025525.

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

It is not a de Polignac number, because 525520253350221 - 2¹ = 525520253350219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525520253351221) 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, 1108692517380 + ... + 1108692517853.

It is an arithmetic number, because the mean of its divisors is an integer number (88695401409360).

Almost surely, 2^{525520253350221} is an apocalyptic number.

It is an amenable number.

525520253350221 is a deficient number, since it is larger than the sum of its proper divisors (184042957924659).

525520253350221 is a wasteful number, since it uses less digits than its factorization.

525520253350221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217385035315.

The product of its (nonzero) digits is 900000, while the sum is 42.

The spelling of 525520253350221 in words is "five hundred twenty-five trillion, five hundred twenty billion, two hundred fifty-three million, three hundred fifty thousand, two hundred twenty-one".