70825439 has 2 divisors, whose sum is σ = 70825440. Its totient is φ = 70825438.

The previous prime is 70825387. The next prime is 70825457. The reversal of 70825439 is 93452807.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70825439 - 2¹⁶ = 70759903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70825459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35412719 + 35412720.

It is an arithmetic number, because the mean of its divisors is an integer number (35412720).

Almost surely, 2^70825439 is an apocalyptic number.

70825439 is a deficient number, since it is larger than the sum of its proper divisors (1).

70825439 is an equidigital number, since it uses as much as digits as its factorization.

70825439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 70825439 is about 8415.7851089485. The cubic root of 70825439 is about 413.7421418538.

It can be divided in two parts, 7082 and 5439, that added together give a palindrome (12521).

The spelling of 70825439 in words is "seventy million, eight hundred twenty-five thousand, four hundred thirty-nine".