65425831 has 2 divisors, whose sum is σ = 65425832. Its totient is φ = 65425830.

The previous prime is 65425817. The next prime is 65425847. The reversal of 65425831 is 13852456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65425831 - 2⁵ = 65425799 is a prime.

It is a super-2 number, since 2×65425831² = 8561078724081122, which contains 22 as substring.

It is equal to p_3864193 and since 65425831 and 3864193 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65425891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32712915 + 32712916.

It is an arithmetic number, because the mean of its divisors is an integer number (32712916).

Almost surely, 2^65425831 is an apocalyptic number.

65425831 is a deficient number, since it is larger than the sum of its proper divisors (1).

65425831 is an equidigital number, since it uses as much as digits as its factorization.

65425831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The square root of 65425831 is about 8088.6235541036. The cubic root of 65425831 is about 402.9486908921.

The spelling of 65425831 in words is "sixty-five million, four hundred twenty-five thousand, eight hundred thirty-one".