75825949 has 2 divisors, whose sum is σ = 75825950. Its totient is φ = 75825948.

The previous prime is 75825853. The next prime is 75825961. The reversal of 75825949 is 94952857.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49632025 + 26193924 = 7045^2 + 5118^2 .

It is an emirp because it is prime and its reverse (94952857) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75825949 - 2⁷ = 75825821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75822949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37912974 + 37912975.

It is an arithmetic number, because the mean of its divisors is an integer number (37912975).

Almost surely, 2^75825949 is an apocalyptic number.

It is an amenable number.

75825949 is a deficient number, since it is larger than the sum of its proper divisors (1).

75825949 is an equidigital number, since it uses as much as digits as its factorization.

75825949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 49.

The square root of 75825949 is about 8707.8096557056. The cubic root of 75825949 is about 423.2587562981.

It can be divided in two parts, 7582 and 5949, that added together give a palindrome (13531).

The spelling of 75825949 in words is "seventy-five million, eight hundred twenty-five thousand, nine hundred forty-nine".