725857126587 has 8 divisors (see below), whose sum is σ = 1075343891280. Its totient is φ = 483904751040.

The previous prime is 725857126529. The next prime is 725857126601. The reversal of 725857126587 is 785621758527.

725857126587 is a `hidden beast` number, since 7 + 2 + 5 + 8 + 571 + 2 + 6 + 58 + 7 = 666.

It is not a de Polignac number, because 725857126587 - 2¹⁴ = 725857110203 is a prime.

It is a super-2 number, since 2×725857126587² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725857126517) 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 7 ways as a sum of consecutive naturals, for example, 13441798614 + ... + 13441798667.

It is an arithmetic number, because the mean of its divisors is an integer number (134417986410).

Almost surely, 2^725857126587 is an apocalyptic number.

725857126587 is a deficient number, since it is larger than the sum of its proper divisors (349486764693).

725857126587 is a wasteful number, since it uses less digits than its factorization.

725857126587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26883597290 (or 26883597284 counting only the distinct ones).

The product of its digits is 65856000, while the sum is 63.

The spelling of 725857126587 in words is "seven hundred twenty-five billion, eight hundred fifty-seven million, one hundred twenty-six thousand, five hundred eighty-seven".