1678748525 has 12 divisors (see below), whose sum is σ = 2082691104. Its totient is φ = 1342326000.

The previous prime is 1678748507. The next prime is 1678748531. The reversal of 1678748525 is 5258478761.

It is not a de Polignac number, because 1678748525 - 2¹⁴ = 1678732141 is a prime.

It is a super-2 number, since 2×1678748525² = 5636393220379351250, which contains 22 as substring.

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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37520 + ... + 69030.

It is an arithmetic number, because the mean of its divisors is an integer number (173557592).

Almost surely, 2^1678748525 is an apocalyptic number.

It is an amenable number.

1678748525 is a deficient number, since it is larger than the sum of its proper divisors (403942579).

1678748525 is a wasteful number, since it uses less digits than its factorization.

1678748525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33652 (or 33647 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 53.

The square root of 1678748525 is about 40972.5337878926. The cubic root of 1678748525 is about 1188.4891319187.

The spelling of 1678748525 in words is "one billion, six hundred seventy-eight million, seven hundred forty-eight thousand, five hundred twenty-five".