725644332402 has 32 divisors (see below), whose sum is σ = 1583545006080. Its totient is φ = 219847637520.

The previous prime is 725644332401. The next prime is 725644332419. The reversal of 725644332402 is 204233446527.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (725644332401) 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, 785902 + ... + 1438377.

It is an arithmetic number, because the mean of its divisors is an integer number (49485781440).

Almost surely, 2^725644332402 is an apocalyptic number.

725644332402 is an abundant number, since it is smaller than the sum of its proper divisors (857900673678).

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

725644332402 is a wasteful number, since it uses less digits than its factorization.

725644332402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229238.

The product of its (nonzero) digits is 967680, while the sum is 42.

Adding to 725644332402 its reverse (204233446527), we get a palindrome (929877778929).

The spelling of 725644332402 in words is "seven hundred twenty-five billion, six hundred forty-four million, three hundred thirty-two thousand, four hundred two".