16225251 has 8 divisors (see below), whose sum is σ = 24724224. Its totient is φ = 9271560.

The previous prime is 16225247. The next prime is 16225283. The reversal of 16225251 is 15252261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16225251 - 2² = 16225247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16225201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386295 + ... + 386336.

It is an arithmetic number, because the mean of its divisors is an integer number (3090528).

Almost surely, 2^16225251 is an apocalyptic number.

16225251 is a deficient number, since it is larger than the sum of its proper divisors (8498973).

16225251 is an equidigital number, since it uses as much as digits as its factorization.

16225251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772641.

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

The square root of 16225251 is about 4028.0579687984. The cubic root of 16225251 is about 253.1611975059.

The spelling of 16225251 in words is "sixteen million, two hundred twenty-five thousand, two hundred fifty-one".