8725039 has 2 divisors, whose sum is σ = 8725040. Its totient is φ = 8725038.

The previous prime is 8725037. The next prime is 8725051. The reversal of 8725039 is 9305278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8725039 - 2¹ = 8725037 is a prime.

It is a super-2 number, since 2×8725039² = 152252611103042, which contains 22 as substring.

Together with 8725037, it forms a pair of twin primes.

8725039 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8724995 and 8725013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8725037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4362519 + 4362520.

It is an arithmetic number, because the mean of its divisors is an integer number (4362520).

Almost surely, 2^8725039 is an apocalyptic number.

8725039 is a deficient number, since it is larger than the sum of its proper divisors (1).

8725039 is an equidigital number, since it uses as much as digits as its factorization.

8725039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 8725039 is about 2953.8176991819. The cubic root of 8725039 is about 205.8681328426.

The spelling of 8725039 in words is "eight million, seven hundred twenty-five thousand, thirty-nine".