5825215620521 has 4 divisors (see below), whose sum is σ = 6354780676944. Its totient is φ = 5295650564100.

The previous prime is 5825215620463. The next prime is 5825215620557. The reversal of 5825215620521 is 1250265125285.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5825215620521 - 2¹⁸ = 5825215358377 is a prime.

It is a super-2 number, since 2×5825215620521² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5825215620221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264782528195 + ... + 264782528216.

It is an arithmetic number, because the mean of its divisors is an integer number (1588695169236).

Almost surely, 2^{5825215620521} is an apocalyptic number.

It is an amenable number.

5825215620521 is a deficient number, since it is larger than the sum of its proper divisors (529565056423).

5825215620521 is a wasteful number, since it uses less digits than its factorization.

5825215620521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529565056422.

The product of its (nonzero) digits is 480000, while the sum is 44.

The spelling of 5825215620521 in words is "five trillion, eight hundred twenty-five billion, two hundred fifteen million, six hundred twenty thousand, five hundred twenty-one".