685545525000 has 1440 divisors, whose sum is σ = 2867340228480. Its totient is φ = 153362160000.

The previous prime is 685545524959. The next prime is 685545525023. The reversal of 685545525000 is 525545586.

685545525000 is a `hidden beast` number, since 6 + 8 + 5 + 545 + 52 + 50 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 14586074977 + ... + 14586075023.

It is an arithmetic number, because the mean of its divisors is an integer number (1991208492).

Almost surely, 2^685545525000 is an apocalyptic number.

685545525000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685545525000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1433670114240).

685545525000 is an abundant number, since it is smaller than the sum of its proper divisors (2181794703480).

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

685545525000 is an frugal number, since it uses more digits than its factorization.

685545525000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 45.

The spelling of 685545525000 in words is "six hundred eighty-five billion, five hundred forty-five million, five hundred twenty-five thousand".