775979425 has 12 divisors (see below), whose sum is σ = 1036231420. Its totient is φ = 573030720.

The previous prime is 775979411. The next prime is 775979441. The reversal of 775979425 is 524979577.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 206870689 + 569108736 = 14383^2 + 23856^2 .

It is not a de Polignac number, because 775979425 - 2⁹ = 775978913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1193490 + ... + 1194139.

Almost surely, 2^775979425 is an apocalyptic number.

It is an amenable number.

775979425 is a deficient number, since it is larger than the sum of its proper divisors (260251995).

775979425 is a wasteful number, since it uses less digits than its factorization.

775979425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387652 (or 2387647 counting only the distinct ones).

The product of its digits is 5556600, while the sum is 55.

The square root of 775979425 is about 27856.4072521924. The cubic root of 775979425 is about 918.9320567226.

The spelling of 775979425 in words is "seven hundred seventy-five million, nine hundred seventy-nine thousand, four hundred twenty-five".