625353617 has 4 divisors (see below), whose sum is σ = 714689856. Its totient is φ = 536017380.

The previous prime is 625353581. The next prime is 625353637. The reversal of 625353617 is 716353526.

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 625353617 - 2²⁴ = 608576401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625353637) 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, 44668109 + ... + 44668122.

It is an arithmetic number, because the mean of its divisors is an integer number (178672464).

Almost surely, 2^625353617 is an apocalyptic number.

It is an amenable number.

625353617 is a deficient number, since it is larger than the sum of its proper divisors (89336239).

625353617 is an equidigital number, since it uses as much as digits as its factorization.

625353617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89336238.

The product of its digits is 113400, while the sum is 38.

The square root of 625353617 is about 25007.0713399230. The cubic root of 625353617 is about 855.1491900212.

Subtracting 625353617 from its reverse (716353526), we obtain a palindrome (90999909).

The spelling of 625353617 in words is "six hundred twenty-five million, three hundred fifty-three thousand, six hundred seventeen".