39025661 has 2 divisors, whose sum is σ = 39025662. Its totient is φ = 39025660.

The previous prime is 39025643. The next prime is 39025663. The reversal of 39025661 is 16652093.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38514436 + 511225 = 6206^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 39025661 - 2¹⁴ = 39009277 is a prime.

Together with 39025663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39025663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19512830 + 19512831.

It is an arithmetic number, because the mean of its divisors is an integer number (19512831).

Almost surely, 2^39025661 is an apocalyptic number.

It is an amenable number.

39025661 is a deficient number, since it is larger than the sum of its proper divisors (1).

39025661 is an equidigital number, since it uses as much as digits as its factorization.

39025661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 39025661 is about 6247.0521848309. The cubic root of 39025661 is about 339.1955056670.

The spelling of 39025661 in words is "thirty-nine million, twenty-five thousand, six hundred sixty-one".