1425289009 has 9 divisors (see below), whose sum is σ = 1505009817. Its totient is φ = 1349594244.

The previous prime is 1425288989. The next prime is 1425289049. The reversal of 1425289009 is 9009825241.

The square root of 1425289009 is 37753.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1425289009 - 2⁷ = 1425288881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1425289049) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 716314 + ... + 718300.

It is an arithmetic number, because the mean of its divisors is an integer number (167223313).

Almost surely, 2^1425289009 is an apocalyptic number.

1425289009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1425289009 is the 37753-rd square number.

1425289009 is the 18877-th centered octagonal number.

It is an amenable number.

1425289009 is a deficient number, since it is larger than the sum of its proper divisors (79720808).

1425289009 is an frugal number, since it uses more digits than its factorization.

1425289009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The cubic root of 1425289009 is about 1125.3846280559.

The spelling of 1425289009 in words is "one billion, four hundred twenty-five million, two hundred eighty-nine thousand, nine".