5425781720 has 64 divisors (see below), whose sum is σ = 12454547040. Its totient is φ = 2126592000.

The previous prime is 5425781717. The next prime is 5425781729. The reversal of 5425781720 is 271875245.

It is a super-3 number, since 3×5425781720³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5425781729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2545055 + ... + 2547185.

Almost surely, 2^5425781720 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 5425781720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6227273520).

5425781720 is an abundant number, since it is smaller than the sum of its proper divisors (7028765320).

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

5425781720 is a wasteful number, since it uses less digits than its factorization.

5425781720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396 (or 3392 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 41.

The square root of 5425781720 is about 73659.9057832686. The cubic root of 5425781720 is about 1757.1982929043.

The spelling of 5425781720 in words is "five billion, four hundred twenty-five million, seven hundred eighty-one thousand, seven hundred twenty".