65725555 has 8 divisors (see below), whose sum is σ = 90137952. Its totient is φ = 45068928.

The previous prime is 65725547. The next prime is 65725573. The reversal of 65725555 is 55552756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65725555 - 2³ = 65725547 is a prime.

It is a super-3 number, since 3×65725555³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938902 + ... + 938971.

It is an arithmetic number, because the mean of its divisors is an integer number (11267244).

Almost surely, 2^65725555 is an apocalyptic number.

65725555 is a deficient number, since it is larger than the sum of its proper divisors (24412397).

65725555 is a wasteful number, since it uses less digits than its factorization.

65725555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877885.

The product of its digits is 262500, while the sum is 40.

The square root of 65725555 is about 8107.1298867108. The cubic root of 65725555 is about 403.5630732824.

The spelling of 65725555 in words is "sixty-five million, seven hundred twenty-five thousand, five hundred fifty-five".