65425599 has 6 divisors (see below), whose sum is σ = 94503656. Its totient is φ = 43617060.

The previous prime is 65425597. The next prime is 65425601. The reversal of 65425599 is 99552456.

It is a happy number.

65425599 is a `hidden beast` number, since 6 + 54 + 2 + 5 + 599 = 666.

It is an interprime number because it is at equal distance from previous prime (65425597) and next prime (65425601).

It is not a de Polignac number, because 65425599 - 2¹ = 65425597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65425597) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3634747 + ... + 3634764.

Almost surely, 2^65425599 is an apocalyptic number.

65425599 is a deficient number, since it is larger than the sum of its proper divisors (29078057).

65425599 is a wasteful number, since it uses less digits than its factorization.

65425599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7269517 (or 7269514 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The square root of 65425599 is about 8088.6092129612. The cubic root of 65425599 is about 402.9482146062.

The spelling of 65425599 in words is "sixty-five million, four hundred twenty-five thousand, five hundred ninety-nine".