43825081 has 2 divisors, whose sum is σ = 43825082. Its totient is φ = 43825080.

The previous prime is 43825073. The next prime is 43825091. The reversal of 43825081 is 18052834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42784681 + 1040400 = 6541^2 + 1020^2 .

It is a cyclic number.

It is not a de Polignac number, because 43825081 - 2³ = 43825073 is a prime.

It is a super-2 number, since 2×43825081² = 3841275449313122, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2651386 and since 43825081 and 2651386 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (43825091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21912540 + 21912541.

It is an arithmetic number, because the mean of its divisors is an integer number (21912541).

Almost surely, 2^43825081 is an apocalyptic number.

It is an amenable number.

43825081 is a deficient number, since it is larger than the sum of its proper divisors (1).

43825081 is an equidigital number, since it uses as much as digits as its factorization.

43825081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 43825081 is about 6620.0514348455. The cubic root of 43825081 is about 352.5663902583.

The spelling of 43825081 in words is "forty-three million, eight hundred twenty-five thousand, eighty-one".