165454925 has 6 divisors (see below), whose sum is σ = 205164138. Its totient is φ = 132363920.

The previous prime is 165454903. The next prime is 165454957. The reversal of 165454925 is 529454561.

165454925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 24581764 + 140873161 = 4958^2 + 11869^2 .

It is not a de Polignac number, because 165454925 - 2²⁰ = 164406349 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3309074 + ... + 3309123.

It is an arithmetic number, because the mean of its divisors is an integer number (34194023).

Almost surely, 2^165454925 is an apocalyptic number.

It is an amenable number.

165454925 is a deficient number, since it is larger than the sum of its proper divisors (39709213).

165454925 is an equidigital number, since it uses as much as digits as its factorization.

165454925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6618207 (or 6618202 counting only the distinct ones).

The product of its digits is 216000, while the sum is 41.

The square root of 165454925 is about 12862.9283213427. The cubic root of 165454925 is about 548.9842685685.

The spelling of 165454925 in words is "one hundred sixty-five million, four hundred fifty-four thousand, nine hundred twenty-five".