825607952443 has 4 divisors (see below), whose sum is σ = 830169322528. Its totient is φ = 821046582360.

The previous prime is 825607952401. The next prime is 825607952471. The reversal of 825607952443 is 344259706528.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-825607952443 is a prime.

It is a super-2 number, since 2×825607952443² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825607952473) 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, 2280684771 + ... + 2280685132.

It is an arithmetic number, because the mean of its divisors is an integer number (207542330632).

Almost surely, 2^825607952443 is an apocalyptic number.

825607952443 is a deficient number, since it is larger than the sum of its proper divisors (4561370085).

825607952443 is a wasteful number, since it uses less digits than its factorization.

825607952443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4561370084.

The product of its (nonzero) digits is 14515200, while the sum is 55.

The spelling of 825607952443 in words is "eight hundred twenty-five billion, six hundred seven million, nine hundred fifty-two thousand, four hundred forty-three".