16425231 has 8 divisors (see below), whose sum is σ = 22366464. Its totient is φ = 10717080.

The previous prime is 16425229. The next prime is 16425259. The reversal of 16425231 is 13252461.

16425231 = T₃₉ + T₄₀ + ... + T₄₆₁.

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

It is not a de Polignac number, because 16425231 - 2¹ = 16425229 is a prime.

It is a super-2 number, since 2×16425231² = 539576426806722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16425221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58105 + ... + 58386.

It is an arithmetic number, because the mean of its divisors is an integer number (2795808).

Almost surely, 2^16425231 is an apocalyptic number.

16425231 is a deficient number, since it is larger than the sum of its proper divisors (5941233).

16425231 is a wasteful number, since it uses less digits than its factorization.

16425231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116541.

The product of its digits is 1440, while the sum is 24.

The square root of 16425231 is about 4052.8053247103. The cubic root of 16425231 is about 254.1970436625.

Adding to 16425231 its reverse (13252461), we get a palindrome (29677692).

The spelling of 16425231 in words is "sixteen million, four hundred twenty-five thousand, two hundred thirty-one".