5725739520 has 240 divisors, whose sum is σ = 19953925992. Its totient is φ = 1517322240.

The previous prime is 5725739507. The next prime is 5725739521. The reversal of 5725739520 is 259375275.

5725739520 is a `hidden beast` number, since 5 + 7 + 257 + 395 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4574087424 + 1151652096 = 67632^2 + 33936^2 .

It is a tau number, because it is divible by the number of its divisors (240).

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

It is not an unprimeable number, because it can be changed into a prime (5725739521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4169554 + ... + 4170926.

Almost surely, 2^5725739520 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 5725739520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9976962996).

5725739520 is an abundant number, since it is smaller than the sum of its proper divisors (14228186472).

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

5725739520 is a wasteful number, since it uses less digits than its factorization.

5725739520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 661500, while the sum is 45.

The square root of 5725739520 is about 75668.6164800177. The cubic root of 5725739520 is about 1789.0007760192. Note that the first 3 decimals are identical.

The spelling of 5725739520 in words is "five billion, seven hundred twenty-five million, seven hundred thirty-nine thousand, five hundred twenty".