625313321 has 4 divisors (see below), whose sum is σ = 631504644. Its totient is φ = 619122000.

The previous prime is 625313287. The next prime is 625313327. The reversal of 625313321 is 123313526.

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 612810025 + 12503296 = 24755^2 + 3536^2 .

It is a cyclic number.

It is not a de Polignac number, because 625313321 - 2¹⁴ = 625296937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625313327) 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, 3095510 + ... + 3095711.

It is an arithmetic number, because the mean of its divisors is an integer number (157876161).

Almost surely, 2^625313321 is an apocalyptic number.

It is an amenable number.

625313321 is a deficient number, since it is larger than the sum of its proper divisors (6191323).

625313321 is a wasteful number, since it uses less digits than its factorization.

625313321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6191322.

The product of its digits is 3240, while the sum is 26.

The square root of 625313321 is about 25006.2656348364. The cubic root of 625313321 is about 855.1308218367.

Adding to 625313321 its reverse (123313526), we get a palindrome (748626847).

The spelling of 625313321 in words is "six hundred twenty-five million, three hundred thirteen thousand, three hundred twenty-one".