625104221 has 12 divisors (see below), whose sum is σ = 727661088. Its totient is φ = 535435992.

The previous prime is 625104217. The next prime is 625104247. The reversal of 625104221 is 122401526.

It is a happy number.

It is not a de Polignac number, because 625104221 - 2² = 625104217 is a prime.

It is a super-2 number, since 2×625104221² = 781510574224033682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625104211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87050 + ... + 93956.

It is an arithmetic number, because the mean of its divisors is an integer number (60638424).

Almost surely, 2^625104221 is an apocalyptic number.

It is an amenable number.

625104221 is a deficient number, since it is larger than the sum of its proper divisors (102556867).

625104221 is a wasteful number, since it uses less digits than its factorization.

625104221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8768 (or 8761 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 625104221 is about 25002.0843331111. The cubic root of 625104221 is about 855.0354948045.

Adding to 625104221 its reverse (122401526), we get a palindrome (747505747).

The spelling of 625104221 in words is "six hundred twenty-five million, one hundred four thousand, two hundred twenty-one".