78903825 has 96 divisors (see below), whose sum is σ = 175322112. Its totient is φ = 30240000.

The previous prime is 78903821. The next prime is 78903829. The reversal of 78903825 is 52830987.

It is an interprime number because it is at equal distance from previous prime (78903821) and next prime (78903829).

It is not a de Polignac number, because 78903825 - 2² = 78903821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78903821) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 74550 + ... + 75600.

It is an arithmetic number, because the mean of its divisors is an integer number (1826272).

Almost surely, 2^78903825 is an apocalyptic number.

78903825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78903825 is an abundant number, since it is smaller than the sum of its proper divisors (96418287).

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

78903825 is a wasteful number, since it uses less digits than its factorization.

78903825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 78903825 is about 8882.7825032475. The cubic root of 78903825 is about 428.9098489667.

The spelling of 78903825 in words is "seventy-eight million, nine hundred three thousand, eight hundred twenty-five".