775525249 has 2 divisors, whose sum is σ = 775525250. Its totient is φ = 775525248.

The previous prime is 775525241. The next prime is 775525259. The reversal of 775525249 is 942525577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 758011024 + 17514225 = 27532^2 + 4185^2 .

It is a cyclic number.

It is not a de Polignac number, because 775525249 - 2³ = 775525241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 775525199 and 775525208.

It is not a weakly prime, because it can be changed into another prime (775525241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387762624 + 387762625.

It is an arithmetic number, because the mean of its divisors is an integer number (387762625).

Almost surely, 2^775525249 is an apocalyptic number.

It is an amenable number.

775525249 is a deficient number, since it is larger than the sum of its proper divisors (1).

775525249 is an equidigital number, since it uses as much as digits as its factorization.

775525249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882000, while the sum is 46.

The square root of 775525249 is about 27848.2539668109. The cubic root of 775525249 is about 918.7527399675.

The spelling of 775525249 in words is "seven hundred seventy-five million, five hundred twenty-five thousand, two hundred forty-nine".