86025465781 has 4 divisors (see below), whose sum is σ = 86026147200. Its totient is φ = 86024784364.

The previous prime is 86025465751. The next prime is 86025465853. The reversal of 86025465781 is 18756452068.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 86025465781 - 2¹³ = 86025457589 is a prime.

It is a super-2 number, since 2×86025465781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86025465751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89701 + ... + 424378.

It is an arithmetic number, because the mean of its divisors is an integer number (21506536800).

Almost surely, 2^86025465781 is an apocalyptic number.

It is an amenable number.

86025465781 is a deficient number, since it is larger than the sum of its proper divisors (681419).

86025465781 is a wasteful number, since it uses less digits than its factorization.

86025465781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681418.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 86025465781 in words is "eighty-six billion, twenty-five million, four hundred sixty-five thousand, seven hundred eighty-one".