825640458485 has 16 divisors (see below), whose sum is σ = 1013869496640. Its totient is φ = 645113548800.

The previous prime is 825640458479. The next prime is 825640458521. The reversal of 825640458485 is 584854046528.

It is not a de Polignac number, because 825640458485 - 2¹⁴ = 825640442101 is a prime.

It is a congruent number.

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, 3862901 + ... + 4071029.

It is an arithmetic number, because the mean of its divisors is an integer number (63366843540).

Almost surely, 2^825640458485 is an apocalyptic number.

It is an amenable number.

825640458485 is a deficient number, since it is larger than the sum of its proper divisors (188229038155).

825640458485 is a wasteful number, since it uses less digits than its factorization.

825640458485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226628.

The product of its (nonzero) digits is 49152000, while the sum is 59.

The spelling of 825640458485 in words is "eight hundred twenty-five billion, six hundred forty million, four hundred fifty-eight thousand, four hundred eighty-five".