725937791922 has 270 divisors, whose sum is σ = 1933244528589. Its totient is φ = 203007954240.

The previous prime is 725937791921. The next prime is 725937791993. The reversal of 725937791922 is 229197739527.

725937791922 is a `hidden beast` number, since 7 + 2 + 593 + 7 + 7 + 9 + 19 + 22 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 722600303481 + 3337488441 = 850059^2 + 57771^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=602469.

It is a Harshad number since it is a multiple of its sum of digits (63).

Its product of digits (30005640) is a multiple of the sum of its prime divisors (216).

It is a self number, because there is not a number n which added to its sum of digits gives 725937791922.

It is not an unprimeable number, because it can be changed into a prime (725937791921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 5541509797 + ... + 5541509927.

Almost surely, 2^725937791922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725937791922

725937791922 is an abundant number, since it is smaller than the sum of its proper divisors (1207306736667).

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

725937791922 is an equidigital number, since it uses as much as digits as its factorization.

725937791922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 216 counting only the distinct ones).

The product of its digits is 30005640, while the sum is 63.

The spelling of 725937791922 in words is "seven hundred twenty-five billion, nine hundred thirty-seven million, seven hundred ninety-one thousand, nine hundred twenty-two".