725275515506 has 8 divisors (see below), whose sum is σ = 1151908171740. Its totient is φ = 341306124928.

The previous prime is 725275515491. The next prime is 725275515511. The reversal of 725275515506 is 605515572527.

725275515506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 691716573025 + 33558942481 = 831695^2 + 183191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10665816371 + ... + 10665816438.

Almost surely, 2^725275515506 is an apocalyptic number.

725275515506 is a deficient number, since it is larger than the sum of its proper divisors (426632656234).

725275515506 is a wasteful number, since it uses less digits than its factorization.

725275515506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21331632828.

The product of its (nonzero) digits is 3675000, while the sum is 50.

The spelling of 725275515506 in words is "seven hundred twenty-five billion, two hundred seventy-five million, five hundred fifteen thousand, five hundred six".