53225252720640 has 6240 divisors, whose sum is σ = 275615124301440. Its totient is φ = 9631589990400.

The previous prime is 53225252720609. The next prime is 53225252720677. The reversal of 53225252720640 is 4602725252235.

53225252720640 is a `hidden beast` number, since 5 + 3 + 22 + 525 + 27 + 20 + 64 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (6240).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 220851670920 + ... + 220851671160.

Almost surely, 2^{53225252720640} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53225252720640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137807562150720).

53225252720640 is an abundant number, since it is smaller than the sum of its proper divisors (222389871580800).

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

53225252720640 is a wasteful number, since it uses less digits than its factorization.

53225252720640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 45.

Adding to 53225252720640 its reverse (4602725252235), we get a palindrome (57827977972875).

The spelling of 53225252720640 in words is "fifty-three trillion, two hundred twenty-five billion, two hundred fifty-two million, seven hundred twenty thousand, six hundred forty".