625678478 has 4 divisors (see below), whose sum is σ = 938517720. Its totient is φ = 312839238.

The previous prime is 625678477. The next prime is 625678513. The reversal of 625678478 is 874876526.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625678477) by changing a digit.

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, 156419618 + ... + 156419621.

It is an arithmetic number, because the mean of its divisors is an integer number (234629430).

Almost surely, 2^625678478 is an apocalyptic number.

625678478 is a deficient number, since it is larger than the sum of its proper divisors (312839242).

625678478 is a wasteful number, since it uses less digits than its factorization.

625678478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312839241.

The product of its digits is 4515840, while the sum is 53.

The square root of 625678478 is about 25013.5658793384. The cubic root of 625678478 is about 855.2972430706.

The spelling of 625678478 in words is "six hundred twenty-five million, six hundred seventy-eight thousand, four hundred seventy-eight".