625384517 has 4 divisors (see below), whose sum is σ = 626450496. Its totient is φ = 624318540.

The previous prime is 625384493. The next prime is 625384523. The reversal of 625384517 is 715483526.

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 625384517 - 2¹⁸ = 625122373 is a prime.

It is a super-2 number, since 2×625384517² = 782211588206646578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625380517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532109 + ... + 533282.

It is an arithmetic number, because the mean of its divisors is an integer number (156612624).

Almost surely, 2^625384517 is an apocalyptic number.

It is an amenable number.

625384517 is a deficient number, since it is larger than the sum of its proper divisors (1065979).

625384517 is a wasteful number, since it uses less digits than its factorization.

625384517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065978.

The product of its digits is 201600, while the sum is 41.

The square root of 625384517 is about 25007.6891575371. The cubic root of 625384517 is about 855.1632746788.

Subtracting 625384517 from its reverse (715483526), we obtain a palindrome (90099009).

The spelling of 625384517 in words is "six hundred twenty-five million, three hundred eighty-four thousand, five hundred seventeen".