78925001 has 2 divisors, whose sum is σ = 78925002. Its totient is φ = 78925000.

The previous prime is 78924971. The next prime is 78925027. The reversal of 78925001 is 10052987.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76038400 + 2886601 = 8720^2 + 1699^2 .

It is a cyclic number.

It is not a de Polignac number, because 78925001 - 2¹⁴ = 78908617 is a prime.

It is not a weakly prime, because it can be changed into another prime (78925051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39462500 + 39462501.

It is an arithmetic number, because the mean of its divisors is an integer number (39462501).

Almost surely, 2^78925001 is an apocalyptic number.

It is an amenable number.

78925001 is a deficient number, since it is larger than the sum of its proper divisors (1).

78925001 is an equidigital number, since it uses as much as digits as its factorization.

78925001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 78925001 is about 8883.9743921288. The cubic root of 78925001 is about 428.9482154318.

Adding to 78925001 its reverse (10052987), we get a palindrome (88977988).

It can be divided in two parts, 78 and 925001, that multiplied together give a triangular number (72150078 = T₁₂₀₁₂).

The spelling of 78925001 in words is "seventy-eight million, nine hundred twenty-five thousand, one".