86551257211525 has 6 divisors (see below), whose sum is σ = 107323558942322. Its totient is φ = 69241005769200.

The previous prime is 86551257211369. The next prime is 86551257211543. The reversal of 86551257211525 is 52511275215568.

It can be written as a sum of positive squares in 3 ways, for example, as 634560407649 + 85916696803876 = 796593^2 + 9269126^2 .

It is not a de Polignac number, because 86551257211525 - 2²³ = 86551248822917 is a prime.

It is a super-2 number, since 2×86551257211525² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1731025144206 + ... + 1731025144255.

Almost surely, 2^{86551257211525} is an apocalyptic number.

It is an amenable number.

86551257211525 is a deficient number, since it is larger than the sum of its proper divisors (20772301730797).

86551257211525 is a wasteful number, since it uses less digits than its factorization.

86551257211525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462050288471 (or 3462050288466 counting only the distinct ones).

The product of its digits is 8400000, while the sum is 55.

The spelling of 86551257211525 in words is "eighty-six trillion, five hundred fifty-one billion, two hundred fifty-seven million, two hundred eleven thousand, five hundred twenty-five".