625638201 has 4 divisors (see below), whose sum is σ = 834184272. Its totient is φ = 417092132.

The previous prime is 625638193. The next prime is 625638239. The reversal of 625638201 is 102836526.

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 625638201 - 2³ = 625638193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625638241) 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, 104273031 + ... + 104273036.

It is an arithmetic number, because the mean of its divisors is an integer number (208546068).

Almost surely, 2^625638201 is an apocalyptic number.

It is an amenable number.

625638201 is a deficient number, since it is larger than the sum of its proper divisors (208546071).

625638201 is a wasteful number, since it uses less digits than its factorization.

625638201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208546070.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 625638201 is about 25012.7607632584. The cubic root of 625638201 is about 855.2788899028.

The spelling of 625638201 in words is "six hundred twenty-five million, six hundred thirty-eight thousand, two hundred one".