78351325 has 18 divisors (see below), whose sum is σ = 104842682. Its totient is φ = 57741600.

The previous prime is 78351323. The next prime is 78351337. The reversal of 78351325 is 52315387.

It can be written as a sum of positive squares in 3 ways, for example, as 241081 + 78110244 = 491^2 + 8838^2 .

It is not a de Polignac number, because 78351325 - 2¹ = 78351323 is a prime.

It is a super-2 number, since 2×78351325² = 12277860258511250, 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 (78351323) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 159330 + ... + 159820.

Almost surely, 2^78351325 is an apocalyptic number.

It is an amenable number.

78351325 is a deficient number, since it is larger than the sum of its proper divisors (26491357).

78351325 is an equidigital number, since it uses as much as digits as its factorization.

78351325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 509 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 78351325 is about 8851.6283812641. The cubic root of 78351325 is about 427.9063996704.

The spelling of 78351325 in words is "seventy-eight million, three hundred fifty-one thousand, three hundred twenty-five".