1709420125 has 48 divisors (see below), whose sum is σ = 2627799408. Its totient is φ = 1103155200.

The previous prime is 1709420117. The next prime is 1709420137. The reversal of 1709420125 is 5210249071.

It can be written as a sum of positive squares in 8 ways, for example, as 526197721 + 1183222404 = 22939^2 + 34398^2 .

It is not a de Polignac number, because 1709420125 - 2³ = 1709420117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95917 + ... + 112333.

It is an arithmetic number, because the mean of its divisors is an integer number (54745821).

Almost surely, 2^1709420125 is an apocalyptic number.

It is an amenable number.

1709420125 is a deficient number, since it is larger than the sum of its proper divisors (918379283).

1709420125 is a wasteful number, since it uses less digits than its factorization.

1709420125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16463 (or 16446 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1709420125 is about 41345.1342360864. The cubic root of 1709420125 is about 1195.6835955019.

Adding to 1709420125 its reverse (5210249071), we get a palindrome (6919669196).

The spelling of 1709420125 in words is "one billion, seven hundred nine million, four hundred twenty thousand, one hundred twenty-five".