725205221835 has 16 divisors (see below), whose sum is σ = 1200339678240. Its totient is φ = 373439010560.

The previous prime is 725205221809. The next prime is 725205221869. The reversal of 725205221835 is 538122502527.

It is not a de Polignac number, because 725205221835 - 2¹² = 725205217739 is a prime.

It is a super-2 number, since 2×725205221835² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833568786 + ... + 833569655.

It is an arithmetic number, because the mean of its divisors is an integer number (75021229890).

Almost surely, 2^725205221835 is an apocalyptic number.

725205221835 is a deficient number, since it is larger than the sum of its proper divisors (475134456405).

725205221835 is a wasteful number, since it uses less digits than its factorization.

725205221835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667138478.

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 725205221835 in words is "seven hundred twenty-five billion, two hundred five million, two hundred twenty-one thousand, eight hundred thirty-five".