625006401 has 4 divisors (see below), whose sum is σ = 833341872. Its totient is φ = 416670932.

The previous prime is 625006379. The next prime is 625006429. The reversal of 625006401 is 104600526.

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 625006401 - 2⁹ = 625005889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625006441) 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, 104167731 + ... + 104167736.

It is an arithmetic number, because the mean of its divisors is an integer number (208335468).

Almost surely, 2^625006401 is an apocalyptic number.

It is an amenable number.

625006401 is a deficient number, since it is larger than the sum of its proper divisors (208335471).

625006401 is a wasteful number, since it uses less digits than its factorization.

625006401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208335470.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 625006401 is about 25000.1280196722. The cubic root of 625006401 is about 854.9908921433.

Adding to 625006401 its reverse (104600526), we get a palindrome (729606927).

The spelling of 625006401 in words is "six hundred twenty-five million, six thousand, four hundred one".