725989989527 has 16 divisors (see below), whose sum is σ = 801520030080. Its totient is φ = 652092448800.

The previous prime is 725989989523. The next prime is 725989989533.

It is a happy number.

725989989527 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 725989989527 - 2² = 725989989523 is a prime.

It is a super-2 number, since 2×725989989527² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725989989521) 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, 770033 + ... + 1430010.

It is an arithmetic number, because the mean of its divisors is an integer number (50095001880).

Almost surely, 2^725989989527 is an apocalyptic number.

725989989527 is a deficient number, since it is larger than the sum of its proper divisors (75530040553).

725989989527 is a wasteful number, since it uses less digits than its factorization.

725989989527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200414.

The product of its digits is 2057529600, while the sum is 80.

The spelling of 725989989527 in words is "seven hundred twenty-five billion, nine hundred eighty-nine million, nine hundred eighty-nine thousand, five hundred twenty-seven".