775772125 has 8 divisors (see below), whose sum is σ = 968163768. Its totient is φ = 620617600.

The previous prime is 775772119. The next prime is 775772131. The reversal of 775772125 is 521277577.

It is an interprime number because it is at equal distance from previous prime (775772119) and next prime (775772131).

It can be written as a sum of positive squares in 4 ways, for example, as 19027044 + 756745081 = 4362^2 + 27509^2 .

It is not a de Polignac number, because 775772125 - 2⁵ = 775772093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3102964 + ... + 3103213.

It is an arithmetic number, because the mean of its divisors is an integer number (121020471).

Almost surely, 2^775772125 is an apocalyptic number.

It is an amenable number.

775772125 is a deficient number, since it is larger than the sum of its proper divisors (192391643).

775772125 is an equidigital number, since it uses as much as digits as its factorization.

775772125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6206192 (or 6206182 counting only the distinct ones).

The product of its digits is 240100, while the sum is 43.

The square root of 775772125 is about 27852.6861361701. The cubic root of 775772125 is about 918.8502196812.

The spelling of 775772125 in words is "seven hundred seventy-five million, seven hundred seventy-two thousand, one hundred twenty-five".