6651925 has 12 divisors (see below), whose sum is σ = 9426976. Its totient is φ = 4561200.

The previous prime is 6651923. The next prime is 6651941. The reversal of 6651925 is 5291566.

It is a happy number.

It is not a de Polignac number, because 6651925 - 2¹ = 6651923 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651923) 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, 18831 + ... + 19180.

Almost surely, 2^6651925 is an apocalyptic number.

It is an amenable number.

6651925 is a deficient number, since it is larger than the sum of its proper divisors (2775051).

6651925 is a wasteful number, since it uses less digits than its factorization.

6651925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38028 (or 38023 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The square root of 6651925 is about 2579.1326061294. The cubic root of 6651925 is about 188.0683790044.

The spelling of 6651925 in words is "six million, six hundred fifty-one thousand, nine hundred twenty-five".