1425018129 has 4 divisors (see below), whose sum is σ = 1900024176. Its totient is φ = 950012084.

The previous prime is 1425018121. The next prime is 1425018143. The reversal of 1425018129 is 9218105241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1425018129 - 2³ = 1425018121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1425018129.

It is not an unprimeable number, because it can be changed into a prime (1425018121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237503019 + ... + 237503024.

It is an arithmetic number, because the mean of its divisors is an integer number (475006044).

Almost surely, 2^1425018129 is an apocalyptic number.

It is an amenable number.

1425018129 is a deficient number, since it is larger than the sum of its proper divisors (475006047).

1425018129 is an equidigital number, since it uses as much as digits as its factorization.

1425018129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475006046.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1425018129 is about 37749.4123000610. The cubic root of 1425018129 is about 1125.3133294163.

The spelling of 1425018129 in words is "one billion, four hundred twenty-five million, eighteen thousand, one hundred twenty-nine".