78584625 has 96 divisors (see below), whose sum is σ = 171714816. Its totient is φ = 33753600.

The previous prime is 78584599. The next prime is 78584657. The reversal of 78584625 is 52648587.

78584625 is a `hidden beast` number, since 7 + 8 + 584 + 62 + 5 = 666.

It is not a de Polignac number, because 78584625 - 2⁷ = 78584497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 133582 + ... + 134168.

It is an arithmetic number, because the mean of its divisors is an integer number (1788696).

Almost surely, 2^78584625 is an apocalyptic number.

78584625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78584625 is an abundant number, since it is smaller than the sum of its proper divisors (93130191).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78584625 is a wasteful number, since it uses less digits than its factorization.

78584625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 619 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 78584625 is about 8864.7969519894. The cubic root of 78584625 is about 428.3306921802.

The spelling of 78584625 in words is "seventy-eight million, five hundred eighty-four thousand, six hundred twenty-five".