625252517 has 2 divisors, whose sum is σ = 625252518. Its totient is φ = 625252516.

The previous prime is 625252487. The next prime is 625252541. The reversal of 625252517 is 715252526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388523521 + 236728996 = 19711^2 + 15386^2 .

It is a cyclic number.

It is not a de Polignac number, because 625252517 - 2⁸ = 625252261 is a prime.

It is a super-3 number, since 3×625252517³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625252567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312626258 + 312626259.

It is an arithmetic number, because the mean of its divisors is an integer number (312626259).

Almost surely, 2^625252517 is an apocalyptic number.

It is an amenable number.

625252517 is a deficient number, since it is larger than the sum of its proper divisors (1).

625252517 is an equidigital number, since it uses as much as digits as its factorization.

625252517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 35.

The square root of 625252517 is about 25005.0498299843. The cubic root of 625252517 is about 855.1031039667.

Subtracting 625252517 from its reverse (715252526), we obtain a palindrome (90000009).

The spelling of 625252517 in words is "six hundred twenty-five million, two hundred fifty-two thousand, five hundred seventeen".