86725601 has 2 divisors, whose sum is σ = 86725602. Its totient is φ = 86725600.

The previous prime is 86725553. The next prime is 86725603. The reversal of 86725601 is 10652768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83247376 + 3478225 = 9124^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 86725601 - 2¹⁸ = 86463457 is a prime.

It is a super-2 number, since 2×86725601² = 15042659737622402, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 86725603, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (86725603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43362800 + 43362801.

It is an arithmetic number, because the mean of its divisors is an integer number (43362801).

Almost surely, 2^86725601 is an apocalyptic number.

It is an amenable number.

86725601 is a deficient number, since it is larger than the sum of its proper divisors (1).

86725601 is an equidigital number, since it uses as much as digits as its factorization.

86725601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 86725601 is about 9312.6581060404. The cubic root of 86725601 is about 442.6384190370.

The spelling of 86725601 in words is "eighty-six million, seven hundred twenty-five thousand, six hundred one".