625404625 has 16 divisors (see below), whose sum is σ = 788248656. Its totient is φ = 495360000.

The previous prime is 625404587. The next prime is 625404629. The reversal of 625404625 is 526404526.

625404625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 66129424 + 559275201 = 8132^2 + 23649^2 .

It is not a de Polignac number, because 625404625 - 2¹³ = 625396433 is a prime.

It is a super-2 number, since 2×625404625² = 782261889942781250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625404629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12144 + ... + 37393.

It is an arithmetic number, because the mean of its divisors is an integer number (49265541).

Almost surely, 2^625404625 is an apocalyptic number.

It is an amenable number.

625404625 is a deficient number, since it is larger than the sum of its proper divisors (162844031).

625404625 is a wasteful number, since it uses less digits than its factorization.

625404625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49653 (or 49643 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 625404625 is about 25008.0911906527. The cubic root of 625404625 is about 855.1724399408.

Subtracting from 625404625 its reverse (526404526), we obtain a palindrome (99000099).

The spelling of 625404625 in words is "six hundred twenty-five million, four hundred four thousand, six hundred twenty-five".