825983362621 has 4 divisors (see below), whose sum is σ = 869456171200. Its totient is φ = 782510554044.

The previous prime is 825983362613. The next prime is 825983362627. The reversal of 825983362621 is 126263389528.

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 825983362621 - 2³ = 825983362613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825983362627) 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, 21736404261 + ... + 21736404298.

It is an arithmetic number, because the mean of its divisors is an integer number (217364042800).

Almost surely, 2^825983362621 is an apocalyptic number.

It is an amenable number.

825983362621 is a deficient number, since it is larger than the sum of its proper divisors (43472808579).

825983362621 is a wasteful number, since it uses less digits than its factorization.

825983362621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43472808578.

The product of its digits is 7464960, while the sum is 55.

The spelling of 825983362621 in words is "eight hundred twenty-five billion, nine hundred eighty-three million, three hundred sixty-two thousand, six hundred twenty-one".