7825663865 has 8 divisors (see below), whose sum is σ = 9799092288. Its totient is φ = 5988334000.

The previous prime is 7825663837. The next prime is 7825663877. The reversal of 7825663865 is 5683665287.

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

It is not a de Polignac number, because 7825663865 - 2¹⁰ = 7825662841 is a prime.

It is a super-2 number, since 2×7825663865² (a number of 21 digits) contains 22 as substring.

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 7825663865.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34024511 + ... + 34024740.

It is an arithmetic number, because the mean of its divisors is an integer number (1224886536).

Almost surely, 2^7825663865 is an apocalyptic number.

It is an amenable number.

7825663865 is a deficient number, since it is larger than the sum of its proper divisors (1973428423).

7825663865 is a wasteful number, since it uses less digits than its factorization.

7825663865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68049279.

The product of its digits is 14515200, while the sum is 56.

The square root of 7825663865 is about 88462.7823720235. The cubic root of 7825663865 is about 1985.3651606949.

The spelling of 7825663865 in words is "seven billion, eight hundred twenty-five million, six hundred sixty-three thousand, eight hundred sixty-five".