78554625 has 32 divisors (see below), whose sum is σ = 133526016. Its totient is φ = 40995200.

The previous prime is 78554611. The next prime is 78554633. The reversal of 78554625 is 52645587.

It is not a de Polignac number, because 78554625 - 2¹² = 78550529 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15397 + ... + 19853.

It is an arithmetic number, because the mean of its divisors is an integer number (4172688).

Almost surely, 2^78554625 is an apocalyptic number.

78554625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78554625 is a deficient number, since it is larger than the sum of its proper divisors (54971391).

78554625 is a wasteful number, since it uses less digits than its factorization.

78554625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4522 (or 4512 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 78554625 is about 8863.1047043347. The cubic root of 78554625 is about 428.2761795820.

The spelling of 78554625 in words is "seventy-eight million, five hundred fifty-four thousand, six hundred twenty-five".