78914925 has 24 divisors (see below), whose sum is σ = 144970880. Its totient is φ = 42087600.

The previous prime is 78914921. The next prime is 78914959. The reversal of 78914925 is 52941987.

78914925 is a `hidden beast` number, since 78 + 91 + 492 + 5 = 666.

It is not a de Polignac number, because 78914925 - 2² = 78914921 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78914921) 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 in 23 ways as a sum of consecutive naturals, for example, 57781 + ... + 59130.

Almost surely, 2^78914925 is an apocalyptic number.

78914925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78914925 is a deficient number, since it is larger than the sum of its proper divisors (66055955).

78914925 is a wasteful number, since it uses less digits than its factorization.

78914925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116930 (or 116919 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 78914925 is about 8883.4072854958. The cubic root of 78914925 is about 428.9299606917.

The spelling of 78914925 in words is "seventy-eight million, nine hundred fourteen thousand, nine hundred twenty-five".