1678267625 has 64 divisors (see below), whose sum is σ = 2357372160. Its totient is φ = 1185408000.

The previous prime is 1678267579. The next prime is 1678267639. The reversal of 1678267625 is 5267628761.

It is not a de Polignac number, because 1678267625 - 2⁸ = 1678267369 is a prime.

It is a super-2 number, since 2×1678267625² = 5633164442246281250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7953770 + ... + 7953980.

It is an arithmetic number, because the mean of its divisors is an integer number (36833940).

Almost surely, 2^1678267625 is an apocalyptic number.

It is an amenable number.

1678267625 is a deficient number, since it is larger than the sum of its proper divisors (679104535).

1678267625 is a wasteful number, since it uses less digits than its factorization.

1678267625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 449 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The square root of 1678267625 is about 40966.6648020070. The cubic root of 1678267625 is about 1188.3756348703.

The spelling of 1678267625 in words is "one billion, six hundred seventy-eight million, two hundred sixty-seven thousand, six hundred twenty-five".