65625121067 has 8 divisors (see below), whose sum is σ = 71645333760. Its totient is φ = 59613957160.

The previous prime is 65625121019. The next prime is 65625121103. The reversal of 65625121067 is 76012152656.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65625121067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65625121007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2247023 + ... + 2276040.

It is an arithmetic number, because the mean of its divisors is an integer number (8955666720).

Almost surely, 2^65625121067 is an apocalyptic number.

65625121067 is a deficient number, since it is larger than the sum of its proper divisors (6020212693).

65625121067 is a wasteful number, since it uses less digits than its factorization.

65625121067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524393.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 65625121067 in words is "sixty-five billion, six hundred twenty-five million, one hundred twenty-one thousand, sixty-seven".