625025001 has 4 divisors (see below), whose sum is σ = 833366672. Its totient is φ = 416683332.

The previous prime is 625024993. The next prime is 625025059. The reversal of 625025001 is 100520526.

625025001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 625025001 - 2³ = 625024993 is a prime.

It is the 25001-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625025701) by changing a digit.

It is a nontrivial repunit in base 25000.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104170831 + ... + 104170836.

It is an arithmetic number, because the mean of its divisors is an integer number (208341668).

Almost surely, 2^625025001 is an apocalyptic number.

It is an amenable number.

625025001 is a deficient number, since it is larger than the sum of its proper divisors (208341671).

625025001 is a wasteful number, since it uses less digits than its factorization.

625025001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208341670.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 625025001 is about 25000.5000149997. The cubic root of 625025001 is about 854.9993734820. Note that the first 3 decimals are identical.

Adding to 625025001 its reverse (100520526), we get a palindrome (725545527).

The spelling of 625025001 in words is "six hundred twenty-five million, twenty-five thousand, one".