538625001001 has 4 divisors (see below), whose sum is σ = 538654960900. Its totient is φ = 538595041104.

The previous prime is 538625000993. The next prime is 538625001049. The reversal of 538625001001 is 100100526835.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 377089333776 + 161535667225 = 614076^2 + 401915^2 .

It is a cyclic number.

It is not a de Polignac number, because 538625001001 - 2³ = 538625000993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538625008001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14952966 + ... + 14988943.

It is an arithmetic number, because the mean of its divisors is an integer number (134663740225).

Almost surely, 2^538625001001 is an apocalyptic number.

It is an amenable number.

538625001001 is a deficient number, since it is larger than the sum of its proper divisors (29959899).

538625001001 is a wasteful number, since it uses less digits than its factorization.

538625001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29959898.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 538625001001 its reverse (100100526835), we get a palindrome (638725527836).

The spelling of 538625001001 in words is "five hundred thirty-eight billion, six hundred twenty-five million, one thousand, one".