65651123525 has 24 divisors (see below), whose sum is σ = 91481228160. Its totient is φ = 46372962240.

The previous prime is 65651123509. The next prime is 65651123537. The reversal of 65651123525 is 52532115656.

It is not a de Polignac number, because 65651123525 - 2⁴ = 65651123509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4383905 + ... + 4398854.

It is an arithmetic number, because the mean of its divisors is an integer number (3811717840).

Almost surely, 2^65651123525 is an apocalyptic number.

65651123525 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65651123525 is a deficient number, since it is larger than the sum of its proper divisors (25830104635).

65651123525 is a wasteful number, since it uses less digits than its factorization.

65651123525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8782805 (or 8782800 counting only the distinct ones).

The product of its digits is 270000, while the sum is 41.

The spelling of 65651123525 in words is "sixty-five billion, six hundred fifty-one million, one hundred twenty-three thousand, five hundred twenty-five".