825706389457 has 8 divisors (see below), whose sum is σ = 826400584800. Its totient is φ = 825012484800.

The previous prime is 825706389421. The next prime is 825706389481. The reversal of 825706389457 is 754983607528.

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

It is a cyclic number.

It is not a de Polignac number, because 825706389457 - 2⁷ = 825706389329 is a prime.

It is a super-2 number, since 2×825706389457² (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 (825706383457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5809078 + ... + 5949520.

It is an arithmetic number, because the mean of its divisors is an integer number (103300073100).

Almost surely, 2^825706389457 is an apocalyptic number.

It is an amenable number.

825706389457 is a deficient number, since it is larger than the sum of its proper divisors (694195343).

825706389457 is a wasteful number, since it uses less digits than its factorization.

825706389457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145343.

The product of its (nonzero) digits is 101606400, while the sum is 64.

The spelling of 825706389457 in words is "eight hundred twenty-five billion, seven hundred six million, three hundred eighty-nine thousand, four hundred fifty-seven".