800125000001 has 4 divisors (see below), whose sum is σ = 825935483904. Its totient is φ = 774314516100.

The previous prime is 800124999967. The next prime is 800125000039. The reversal of 800125000001 is 100000521008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 800125000001 - 2²⁶ = 800057891137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (800125003001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12905241905 + ... + 12905241966.

It is an arithmetic number, because the mean of its divisors is an integer number (206483870976).

Almost surely, 2^800125000001 is an apocalyptic number.

It is an amenable number.

800125000001 is a deficient number, since it is larger than the sum of its proper divisors (25810483903).

800125000001 is a wasteful number, since it uses less digits than its factorization.

800125000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25810483902.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 800125000001 its reverse (100000521008), we get a palindrome (900125521009).

The spelling of 800125000001 in words is "eight hundred billion, one hundred twenty-five million, one", and thus it is an aban number.