1684279425 has 12 divisors (see below), whose sum is σ = 2784675440. Its totient is φ = 898282320.

The previous prime is 1684279423. The next prime is 1684279481. The reversal of 1684279425 is 5249724861.

It is not a de Polignac number, because 1684279425 - 2¹ = 1684279423 is a prime.

It is a super-3 number, since 3×1684279425³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1684279423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11228455 + ... + 11228604.

Almost surely, 2^1684279425 is an apocalyptic number.

1684279425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1684279425 is a deficient number, since it is larger than the sum of its proper divisors (1100396015).

1684279425 is a wasteful number, since it uses less digits than its factorization.

1684279425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22457072 (or 22457067 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 1684279425 is about 41039.9735014534. The cubic root of 1684279425 is about 1189.7929223273.

The spelling of 1684279425 in words is "one billion, six hundred eighty-four million, two hundred seventy-nine thousand, four hundred twenty-five".