725528121238 has 8 divisors (see below), whose sum is σ = 1088392140360. Its totient is φ = 362730741120.

The previous prime is 725528121221. The next prime is 725528121281. The reversal of 725528121238 is 832121825527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16632523 + ... + 16676086.

It is an arithmetic number, because the mean of its divisors is an integer number (136049017545).

Almost surely, 2^725528121238 is an apocalyptic number.

725528121238 is a deficient number, since it is larger than the sum of its proper divisors (362864019122).

725528121238 is a wasteful number, since it uses less digits than its factorization.

725528121238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33319502.

The product of its digits is 537600, while the sum is 46.

The spelling of 725528121238 in words is "seven hundred twenty-five billion, five hundred twenty-eight million, one hundred twenty-one thousand, two hundred thirty-eight".