163554425 has 12 divisors (see below), whose sum is σ = 203221740. Its totient is φ = 130576320.

The previous prime is 163554401. The next prime is 163554427. The reversal of 163554425 is 524455361.

It can be written as a sum of positive squares in 6 ways, for example, as 1857769 + 161696656 = 1363^2 + 12716^2 .

It is not a de Polignac number, because 163554425 - 2¹⁸ = 163292281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163554427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6299 + ... + 19151.

It is an arithmetic number, because the mean of its divisors is an integer number (16935145).

Almost surely, 2^163554425 is an apocalyptic number.

It is an amenable number.

163554425 is a deficient number, since it is larger than the sum of its proper divisors (39667315).

163554425 is a wasteful number, since it uses less digits than its factorization.

163554425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13372 (or 13367 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 163554425 is about 12788.8398613791. The cubic root of 163554425 is about 546.8741972233.

The spelling of 163554425 in words is "one hundred sixty-three million, five hundred fifty-four thousand, four hundred twenty-five".