65657531554325 has 12 divisors (see below), whose sum is σ = 83147580386880. Its totient is φ = 51408450237360.

The previous prime is 65657531554301. The next prime is 65657531554343. The reversal of 65657531554325 is 52345513575656.

It is a happy number.

It is not a de Polignac number, because 65657531554325 - 2²⁴ = 65657514777109 is a prime.

It is a super-2 number, since 2×65657531554325² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27939373955 + ... + 27939376304.

It is an arithmetic number, because the mean of its divisors is an integer number (6928965032240).

Almost surely, 2^{65657531554325} is an apocalyptic number.

It is an amenable number.

65657531554325 is a deficient number, since it is larger than the sum of its proper divisors (17490048832555).

65657531554325 is a wasteful number, since it uses less digits than its factorization.

65657531554325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55878750316 (or 55878750311 counting only the distinct ones).

The product of its digits is 283500000, while the sum is 62.

The spelling of 65657531554325 in words is "sixty-five trillion, six hundred fifty-seven billion, five hundred thirty-one million, five hundred fifty-four thousand, three hundred twenty-five".