825625625815 has 4 divisors (see below), whose sum is σ = 990750750984. Its totient is φ = 660500500648.

The previous prime is 825625625809. The next prime is 825625625821. The reversal of 825625625815 is 518526526528.

It is a happy number.

825625625815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (825625625809) and next prime (825625625821).

It is a cyclic number.

It is not a de Polignac number, because 825625625815 - 2¹³ = 825625617623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82562562577 + ... + 82562562586.

It is an arithmetic number, because the mean of its divisors is an integer number (247687687746).

Almost surely, 2^825625625815 is an apocalyptic number.

825625625815 is a deficient number, since it is larger than the sum of its proper divisors (165125125169).

825625625815 is a wasteful number, since it uses less digits than its factorization.

825625625815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165125125168.

The product of its digits is 11520000, while the sum is 55.

The spelling of 825625625815 in words is "eight hundred twenty-five billion, six hundred twenty-five million, six hundred twenty-five thousand, eight hundred fifteen".