1606354425 has 72 divisors (see below), whose sum is σ = 3113097624. Its totient is φ = 787092480.

The previous prime is 1606354417. The next prime is 1606354427. The reversal of 1606354425 is 5244536061.

1606354425 is a `hidden beast` number, since 1 + 606 + 3 + 5 + 4 + 42 + 5 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 1224230121 + 382124304 = 34989^2 + 19548^2 .

It is not a de Polignac number, because 1606354425 - 2³ = 1606354417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1606354425.

It is not an unprimeable number, because it can be changed into a prime (1606354427) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 680347 + ... + 682703.

It is an arithmetic number, because the mean of its divisors is an integer number (43237467).

Almost surely, 2^1606354425 is an apocalyptic number.

1606354425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1606354425 is a deficient number, since it is larger than the sum of its proper divisors (1506743199).

1606354425 is a wasteful number, since it uses less digits than its factorization.

1606354425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619 (or 2611 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 1606354425 is about 40079.3516040367. The cubic root of 1606354425 is about 1171.1534209541.

The spelling of 1606354425 in words is "one billion, six hundred six million, three hundred fifty-four thousand, four hundred twenty-five".