165425760 has 192 divisors, whose sum is σ = 585144000. Its totient is φ = 43646976.

The previous prime is 165425737. The next prime is 165425783. The reversal of 165425760 is 67524561.

It is a happy number.

165425760 is a `hidden beast` number, since 1 + 6 + 542 + 57 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (165425737) and next prime (165425783).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 643552 + ... + 643808.

It is an arithmetic number, because the mean of its divisors is an integer number (3047625).

Almost surely, 2^165425760 is an apocalyptic number.

165425760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165425760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292572000).

165425760 is an abundant number, since it is smaller than the sum of its proper divisors (419718240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165425760 is a wasteful number, since it uses less digits than its factorization.

165425760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 165425760 is about 12861.7945870707. The cubic root of 165425760 is about 548.9520098993.

The spelling of 165425760 in words is "one hundred sixty-five million, four hundred twenty-five thousand, seven hundred sixty".