1425725729 has 2 divisors, whose sum is σ = 1425725730. Its totient is φ = 1425725728.

The previous prime is 1425725713. The next prime is 1425725731. The reversal of 1425725729 is 9275275241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1051380625 + 374345104 = 32425^2 + 19348^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425725729 - 2⁴ = 1425725713 is a prime.

Together with 1425725731, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1425725729.

It is not a weakly prime, because it can be changed into another prime (1425725429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712862864 + 712862865.

It is an arithmetic number, because the mean of its divisors is an integer number (712862865).

Almost surely, 2^1425725729 is an apocalyptic number.

It is an amenable number.

1425725729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425725729 is an equidigital number, since it uses as much as digits as its factorization.

1425725729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 44.

The square root of 1425725729 is about 37758.7834682210. The cubic root of 1425725729 is about 1125.4995586145.

The spelling of 1425725729 in words is "one billion, four hundred twenty-five million, seven hundred twenty-five thousand, seven hundred twenty-nine".