625315963 has 4 divisors (see below), whose sum is σ = 625478968. Its totient is φ = 625152960.

The previous prime is 625315949. The next prime is 625315967. The reversal of 625315963 is 369513526.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 369513526 = 2 ⋅184756763.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625315963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625315967) 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, 75606 + ... + 83467.

It is an arithmetic number, because the mean of its divisors is an integer number (156369742).

Almost surely, 2^625315963 is an apocalyptic number.

625315963 is a deficient number, since it is larger than the sum of its proper divisors (163005).

625315963 is a wasteful number, since it uses less digits than its factorization.

625315963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163004.

The product of its digits is 145800, while the sum is 40.

The square root of 625315963 is about 25006.3184615409. The cubic root of 625315963 is about 855.1320261676.

The spelling of 625315963 in words is "six hundred twenty-five million, three hundred fifteen thousand, nine hundred sixty-three".