625998045 has 32 divisors (see below), whose sum is σ = 1028764800. Its totient is φ = 324853760.

The previous prime is 625998019. The next prime is 625998047. The reversal of 625998045 is 540899526.

It is not a de Polignac number, because 625998045 - 2⁵ = 625998013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 625997985 and 625998003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625998047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275002 + ... + 277268.

It is an arithmetic number, because the mean of its divisors is an integer number (32148900).

Almost surely, 2^625998045 is an apocalyptic number.

It is an amenable number.

625998045 is a deficient number, since it is larger than the sum of its proper divisors (402766755).

625998045 is a wasteful number, since it uses less digits than its factorization.

625998045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765.

The product of its (nonzero) digits is 777600, while the sum is 48.

The square root of 625998045 is about 25019.9529376056. The cubic root of 625998045 is about 855.4428334247.

The spelling of 625998045 in words is "six hundred twenty-five million, nine hundred ninety-eight thousand, forty-five".