74825129 has 2 divisors, whose sum is σ = 74825130. Its totient is φ = 74825128.

The previous prime is 74825111. The next prime is 74825167. The reversal of 74825129 is 92152847.

It is an a-pointer prime, because the next prime (74825167) can be obtained adding 74825129 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37797904 + 37027225 = 6148^2 + 6085^2 .

It is an emirp because it is prime and its reverse (92152847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74825129 - 2⁸ = 74824873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74825092 and 74825101.

It is not a weakly prime, because it can be changed into another prime (74825189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37412564 + 37412565.

It is an arithmetic number, because the mean of its divisors is an integer number (37412565).

Almost surely, 2^74825129 is an apocalyptic number.

It is an amenable number.

74825129 is a deficient number, since it is larger than the sum of its proper divisors (1).

74825129 is an equidigital number, since it uses as much as digits as its factorization.

74825129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 74825129 is about 8650.1519639831. The cubic root of 74825129 is about 421.3883177760.

The spelling of 74825129 in words is "seventy-four million, eight hundred twenty-five thousand, one hundred twenty-nine".