613560225420 has 144 divisors (see below), whose sum is σ = 1943882216640. Its totient is φ = 156354789888.

The previous prime is 613560225409. The next prime is 613560225449. The reversal of 613560225420 is 24522065316.

613560225420 is a `hidden beast` number, since 6 + 1 + 3 + 5 + 6 + 0 + 225 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4356342 + ... + 4494978.

It is an arithmetic number, because the mean of its divisors is an integer number (13499182060).

Almost surely, 2^613560225420 is an apocalyptic number.

613560225420 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 613560225420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (971941108320).

613560225420 is an abundant number, since it is smaller than the sum of its proper divisors (1330321991220).

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

613560225420 is a wasteful number, since it uses less digits than its factorization.

613560225420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139744 (or 139739 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 613560225420 in words is "six hundred thirteen billion, five hundred sixty million, two hundred twenty-five thousand, four hundred twenty".