742779425 has 6 divisors (see below), whose sum is σ = 921046518. Its totient is φ = 594223520.

The previous prime is 742779413. The next prime is 742779431. The reversal of 742779425 is 524977247.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 104509729 + 638269696 = 10223^2 + 25264^2 .

It is not a de Polignac number, because 742779425 - 2¹⁰ = 742778401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742779425.

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 5 ways as a sum of consecutive naturals, for example, 14855564 + ... + 14855613.

It is an arithmetic number, because the mean of its divisors is an integer number (153507753).

Almost surely, 2^742779425 is an apocalyptic number.

It is an amenable number.

742779425 is a deficient number, since it is larger than the sum of its proper divisors (178267093).

742779425 is a wasteful number, since it uses less digits than its factorization.

742779425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29711187 (or 29711182 counting only the distinct ones).

The product of its digits is 987840, while the sum is 47.

The square root of 742779425 is about 27253.9799845821. The cubic root of 742779425 is about 905.6351879124.

The spelling of 742779425 in words is "seven hundred forty-two million, seven hundred seventy-nine thousand, four hundred twenty-five".