425155729 has 2 divisors, whose sum is σ = 425155730. Its totient is φ = 425155728.

The previous prime is 425155727. The next prime is 425155733. The reversal of 425155729 is 927551524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391248400 + 33907329 = 19780^2 + 5823^2 .

It is a cyclic number.

It is not a de Polignac number, because 425155729 - 2¹ = 425155727 is a prime.

Together with 425155727, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 425155691 and 425155700.

It is not a weakly prime, because it can be changed into another prime (425155727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212577864 + 212577865.

It is an arithmetic number, because the mean of its divisors is an integer number (212577865).

Almost surely, 2^425155729 is an apocalyptic number.

It is an amenable number.

425155729 is a deficient number, since it is larger than the sum of its proper divisors (1).

425155729 is an equidigital number, since it uses as much as digits as its factorization.

425155729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 40.

The square root of 425155729 is about 20619.3047651952. The cubic root of 425155729 is about 751.9391178123.

The spelling of 425155729 in words is "four hundred twenty-five million, one hundred fifty-five thousand, seven hundred twenty-nine".