125780329 has 2 divisors, whose sum is σ = 125780330. Its totient is φ = 125780328.

The previous prime is 125780327. The next prime is 125780351. The reversal of 125780329 is 923087521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66797929 + 58982400 = 8173^2 + 7680^2 .

It is a cyclic number.

It is not a de Polignac number, because 125780329 - 2¹ = 125780327 is a prime.

Together with 125780327, it forms a pair of twin primes.

It is equal to p_7151977 and since 125780329 and 7151977 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (125780321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62890164 + 62890165.

It is an arithmetic number, because the mean of its divisors is an integer number (62890165).

Almost surely, 2^125780329 is an apocalyptic number.

It is an amenable number.

125780329 is a deficient number, since it is larger than the sum of its proper divisors (1).

125780329 is an equidigital number, since it uses as much as digits as its factorization.

125780329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 125780329 is about 11215.1829677451. The cubic root of 125780329 is about 501.0382811189.

The spelling of 125780329 in words is "one hundred twenty-five million, seven hundred eighty thousand, three hundred twenty-nine".