725761334642 has 16 divisors (see below), whose sum is σ = 1104970000032. Its totient is φ = 357438781920.

The previous prime is 725761334633. The next prime is 725761334693. The reversal of 725761334642 is 246433167527.

It is a super-2 number, since 2×725761334642² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1743158 + ... + 2118990.

It is an arithmetic number, because the mean of its divisors is an integer number (69060625002).

Almost surely, 2^725761334642 is an apocalyptic number.

725761334642 is a deficient number, since it is larger than the sum of its proper divisors (379208665390).

725761334642 is a wasteful number, since it uses less digits than its factorization.

725761334642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390313.

The product of its digits is 5080320, while the sum is 50.

The spelling of 725761334642 in words is "seven hundred twenty-five billion, seven hundred sixty-one million, three hundred thirty-four thousand, six hundred forty-two".