5501720725 has 12 divisors (see below), whose sum is σ = 6857487556. Its totient is φ = 4378567680.

The previous prime is 5501720717. The next prime is 5501720729. The reversal of 5501720725 is 5270271055.

It can be written as a sum of positive squares in 6 ways, for example, as 31787044 + 5469933681 = 5638^2 + 73959^2 .

It is not a de Polignac number, because 5501720725 - 2³ = 5501720717 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5501720729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 565302 + ... + 574951.

Almost surely, 2^5501720725 is an apocalyptic number.

It is an amenable number.

5501720725 is a deficient number, since it is larger than the sum of its proper divisors (1355766831).

5501720725 is a wasteful number, since it uses less digits than its factorization.

5501720725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140456 (or 1140451 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 5501720725 is about 74173.5850893025. The cubic root of 5501720725 is about 1765.3582320641.

The spelling of 5501720725 in words is "five billion, five hundred one million, seven hundred twenty thousand, seven hundred twenty-five".