1656942925 has 12 divisors (see below), whose sum is σ = 2241392256. Its totient is φ = 1205049200.

The previous prime is 1656942907. The next prime is 1656942943. The reversal of 1656942925 is 5292496561.

It is an interprime number because it is at equal distance from previous prime (1656942907) and next prime (1656942943).

It is not a de Polignac number, because 1656942925 - 2⁷ = 1656942797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3012349 + ... + 3012898.

It is an arithmetic number, because the mean of its divisors is an integer number (186782688).

Almost surely, 2^1656942925 is an apocalyptic number.

It is an amenable number.

1656942925 is a deficient number, since it is larger than the sum of its proper divisors (584449331).

1656942925 is a wasteful number, since it uses less digits than its factorization.

1656942925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6025268 (or 6025263 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 49.

The square root of 1656942925 is about 40705.5638088947. The cubic root of 1656942925 is about 1183.3208486858.

The spelling of 1656942925 in words is "one billion, six hundred fifty-six million, nine hundred forty-two thousand, nine hundred twenty-five".