625641416 has 8 divisors (see below), whose sum is σ = 1173077670. Its totient is φ = 312820704.

The previous prime is 625641407. The next prime is 625641439. The reversal of 625641416 is 614146526.

It can be written as a sum of positive squares in only one way, i.e., 528540100 + 97101316 = 22990^2 + 9854^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 39102581 + ... + 39102596.

Almost surely, 2^625641416 is an apocalyptic number.

It is an amenable number.

625641416 is a deficient number, since it is larger than the sum of its proper divisors (547436254).

625641416 is a wasteful number, since it uses less digits than its factorization.

625641416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78205183 (or 78205179 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 625641416 is about 25012.8250303719. The cubic root of 625641416 is about 855.2803549226.

The spelling of 625641416 in words is "six hundred twenty-five million, six hundred forty-one thousand, four hundred sixteen".