162521025 has 12 divisors (see below), whose sum is σ = 268701552. Its totient is φ = 86677840.

The previous prime is 162520999. The next prime is 162521039. The reversal of 162521025 is 520125261.

It is a happy number.

It is not a de Polignac number, because 162521025 - 2⁵ = 162520993 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 162520986 and 162521004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1083399 + ... + 1083548.

It is an arithmetic number, because the mean of its divisors is an integer number (22391796).

Almost surely, 2^162521025 is an apocalyptic number.

162521025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

162521025 is a deficient number, since it is larger than the sum of its proper divisors (106180527).

162521025 is a wasteful number, since it uses less digits than its factorization.

162521025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166960 (or 2166955 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 162521025 is about 12748.3734256571. The cubic root of 162521025 is about 545.7199754237.

Adding to 162521025 its reverse (520125261), we get a palindrome (682646286).

The spelling of 162521025 in words is "one hundred sixty-two million, five hundred twenty-one thousand, twenty-five".