16101225 has 36 divisors (see below), whose sum is σ = 32962176. Its totient is φ = 7359840.

The previous prime is 16101223. The next prime is 16101247. The reversal of 16101225 is 52210161.

It is not a de Polignac number, because 16101225 - 2¹ = 16101223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16101198 and 16101207.

It is not an unprimeable number, because it can be changed into a prime (16101223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3537 + ... + 6686.

It is an arithmetic number, because the mean of its divisors is an integer number (915616).

Almost surely, 2^16101225 is an apocalyptic number.

16101225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16101225 is an abundant number, since it is smaller than the sum of its proper divisors (16860951).

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

16101225 is a wasteful number, since it uses less digits than its factorization.

16101225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10246 (or 10238 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 16101225 is about 4012.6331753600. The cubic root of 16101225 is about 252.5144912116.

Adding to 16101225 its reverse (52210161), we get a palindrome (68311386).

The spelling of 16101225 in words is "sixteen million, one hundred one thousand, two hundred twenty-five".