655290525120 has 896 divisors, whose sum is σ = 2638809169920. Its totient is φ = 133831802880.

The previous prime is 655290525049. The next prime is 655290525137. The reversal of 655290525120 is 21525092556.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1345565517 + ... + 1345566003.

It is an arithmetic number, because the mean of its divisors is an integer number (2945099520).

Almost surely, 2^655290525120 is an apocalyptic number.

655290525120 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 655290525120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319404584960).

655290525120 is an abundant number, since it is smaller than the sum of its proper divisors (1983518644800).

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

655290525120 is a wasteful number, since it uses less digits than its factorization.

655290525120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 655290525120 in words is "six hundred fifty-five billion, two hundred ninety million, five hundred twenty-five thousand, one hundred twenty".