78148325 has 12 divisors (see below), whose sum is σ = 98233668. Its totient is φ = 61660800.

The previous prime is 78148289. The next prime is 78148327. The reversal of 78148325 is 52384187.

It can be written as a sum of positive squares in 6 ways, for example, as 11546404 + 66601921 = 3398^2 + 8161^2 .

It is not a de Polignac number, because 78148325 - 2⁶ = 78148261 is a prime.

It is a super-2 number, since 2×78148325² = 12214321400611250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78148327) 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 11 ways as a sum of consecutive naturals, for example, 19586 + ... + 23235.

It is an arithmetic number, because the mean of its divisors is an integer number (8186139).

Almost surely, 2^78148325 is an apocalyptic number.

It is an amenable number.

78148325 is a deficient number, since it is larger than the sum of its proper divisors (20085343).

78148325 is a wasteful number, since it uses less digits than its factorization.

78148325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42904 (or 42899 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 78148325 is about 8840.1541276156. The cubic root of 78148325 is about 427.5365266374.

The spelling of 78148325 in words is "seventy-eight million, one hundred forty-eight thousand, three hundred twenty-five".