78025430 has 32 divisors (see below), whose sum is σ = 167491584. Its totient is φ = 25587936.

The previous prime is 78025421. The next prime is 78025433. The reversal of 78025430 is 3452087.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78025393 and 78025402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78025433) 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 15 ways as a sum of consecutive naturals, for example, 22622 + ... + 25841.

It is an arithmetic number, because the mean of its divisors is an integer number (5234112).

Almost surely, 2^78025430 is an apocalyptic number.

78025430 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78025430 is an abundant number, since it is smaller than the sum of its proper divisors (89466154).

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

78025430 is a wasteful number, since it uses less digits than its factorization.

78025430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48500.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 78025430 is about 8833.2004392519. The cubic root of 78025430 is about 427.3122963341.

The spelling of 78025430 in words is "seventy-eight million, twenty-five thousand, four hundred thirty".