78226125 has 32 divisors (see below), whose sum is σ = 130765440. Its totient is φ = 41529600.

The previous prime is 78226123. The next prime is 78226133. The reversal of 78226125 is 52162287.

It is not a de Polignac number, because 78226125 - 2¹ = 78226123 is a prime.

It is a super-2 number, since 2×78226125² = 12238653265031250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78226121) 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 31 ways as a sum of consecutive naturals, for example, 126066 + ... + 126684.

It is an arithmetic number, because the mean of its divisors is an integer number (4086420).

Almost surely, 2^78226125 is an apocalyptic number.

78226125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78226125 is a deficient number, since it is larger than the sum of its proper divisors (52539315).

78226125 is a wasteful number, since it uses less digits than its factorization.

78226125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974 (or 964 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 78226125 is about 8844.5534087369. The cubic root of 78226125 is about 427.6783565480.

The spelling of 78226125 in words is "seventy-eight million, two hundred twenty-six thousand, one hundred twenty-five".