215375125001 has 4 divisors (see below), whose sum is σ = 215631830400. Its totient is φ = 215118419604.

The previous prime is 215375124931. The next prime is 215375125027. The reversal of 215375125001 is 100521573512.

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 a de Polignac number, because none of the positive numbers 2^k-215375125001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215375125061) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 128351441 + ... + 128353118.

It is an arithmetic number, because the mean of its divisors is an integer number (53907957600).

Almost surely, 2^215375125001 is an apocalyptic number.

It is an amenable number.

215375125001 is a deficient number, since it is larger than the sum of its proper divisors (256705399).

215375125001 is an equidigital number, since it uses as much as digits as its factorization.

215375125001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256705398.

The product of its (nonzero) digits is 10500, while the sum is 32.

Adding to 215375125001 its reverse (100521573512), we get a palindrome (315896698513).

The spelling of 215375125001 in words is "two hundred fifteen billion, three hundred seventy-five million, one hundred twenty-five thousand, one".