775135425 has 24 divisors (see below), whose sum is σ = 1282973440. Its totient is φ = 412948800.

The previous prime is 775135391. The next prime is 775135481. The reversal of 775135425 is 524531577.

It is a happy number.

It is not a de Polignac number, because 775135425 - 2¹³ = 775127233 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69111 + ... + 79539.

Almost surely, 2^775135425 is an apocalyptic number.

775135425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

775135425 is a deficient number, since it is larger than the sum of its proper divisors (507838015).

775135425 is a wasteful number, since it uses less digits than its factorization.

775135425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11433 (or 11428 counting only the distinct ones).

The product of its digits is 147000, while the sum is 39.

The square root of 775135425 is about 27841.2540127057. The cubic root of 775135425 is about 918.5987746841.

The spelling of 775135425 in words is "seven hundred seventy-five million, one hundred thirty-five thousand, four hundred twenty-five".