165196725 has 24 divisors (see below), whose sum is σ = 273500352. Its totient is φ = 87984000.

The previous prime is 165196657. The next prime is 165196739. The reversal of 165196725 is 527691561.

It is not a de Polignac number, because 165196725 - 2¹³ = 165188533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90825 + ... + 92625.

It is an arithmetic number, because the mean of its divisors is an integer number (11395848).

Almost surely, 2^165196725 is an apocalyptic number.

165196725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165196725 is a deficient number, since it is larger than the sum of its proper divisors (108303627).

165196725 is a wasteful number, since it uses less digits than its factorization.

165196725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037 (or 3032 counting only the distinct ones).

The product of its digits is 113400, while the sum is 42.

The square root of 165196725 is about 12852.8878078041. The cubic root of 165196725 is about 548.6985481792.

The spelling of 165196725 in words is "one hundred sixty-five million, one hundred ninety-six thousand, seven hundred twenty-five".