7825825865 has 16 divisors (see below), whose sum is σ = 11032773696. Its totient is φ = 5253700800.

The previous prime is 7825825853. The next prime is 7825825871. The reversal of 7825825865 is 5685285287.

It is not a de Polignac number, because 7825825865 - 2⁶ = 7825825801 is a prime.

It is a super-2 number, since 2×7825825865² (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 7825825865.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5471891 + ... + 5473320.

It is an arithmetic number, because the mean of its divisors is an integer number (689548356).

Almost surely, 2^7825825865 is an apocalyptic number.

It is an amenable number.

7825825865 is a deficient number, since it is larger than the sum of its proper divisors (3206947831).

7825825865 is a wasteful number, since it uses less digits than its factorization.

7825825865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10945240.

The product of its digits is 10752000, while the sum is 56.

The square root of 7825825865 is about 88463.6980065835. The cubic root of 7825825865 is about 1985.3788603607.

The spelling of 7825825865 in words is "seven billion, eight hundred twenty-five million, eight hundred twenty-five thousand, eight hundred sixty-five".