825303661404 has 12 divisors (see below), whose sum is σ = 1925708543304. Its totient is φ = 275101220464.

The previous prime is 825303661271. The next prime is 825303661471. The reversal of 825303661404 is 404166303528.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×825303661404² (a number of 25 digits) contains 22 as substring.

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, 34387652547 + ... + 34387652570.

It is an arithmetic number, because the mean of its divisors is an integer number (160475711942).

Almost surely, 2^825303661404 is an apocalyptic number.

It is an amenable number.

825303661404 is an abundant number, since it is smaller than the sum of its proper divisors (1100404881900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

825303661404 is a wasteful number, since it uses less digits than its factorization.

825303661404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68775305124 (or 68775305122 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 825303661404 in words is "eight hundred twenty-five billion, three hundred three million, six hundred sixty-one thousand, four hundred four".