625605545 has 16 divisors (see below), whose sum is σ = 777882960. Its totient is φ = 482436864.

The previous prime is 625605529. The next prime is 625605553. The reversal of 625605545 is 545506526.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 130142464 + 495463081 = 11408^2 + 22259^2 .

It is a cyclic number.

It is not a de Polignac number, because 625605545 - 2⁴ = 625605529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 625605499 and 625605508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94979 + ... + 101351.

It is an arithmetic number, because the mean of its divisors is an integer number (48617685).

Almost surely, 2^625605545 is an apocalyptic number.

It is an amenable number.

625605545 is a deficient number, since it is larger than the sum of its proper divisors (152277415).

625605545 is a wasteful number, since it uses less digits than its factorization.

625605545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7084.

The product of its (nonzero) digits is 180000, while the sum is 38.

The square root of 625605545 is about 25012.1079679422. The cubic root of 625605545 is about 855.2640088457.

The spelling of 625605545 in words is "six hundred twenty-five million, six hundred five thousand, five hundred forty-five".