725846219522 has 6 divisors (see below), whose sum is σ = 1088771136579. Its totient is φ = 362922507330.

The previous prime is 725846219521. The next prime is 725846219551. The reversal of 725846219522 is 225912648527.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 362923109761 + 362923109761 = 602431^2 + 602431^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=602431.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725846219521) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 903647 + ... + 1506077.

Almost surely, 2^725846219522 is an apocalyptic number.

725846219522 is a deficient number, since it is larger than the sum of its proper divisors (362924917057).

725846219522 is an frugal number, since it uses more digits than its factorization.

725846219522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204864 (or 602433 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 53.

The spelling of 725846219522 in words is "seven hundred twenty-five billion, eight hundred forty-six million, two hundred nineteen thousand, five hundred twenty-two".