16231725 has 48 divisors (see below), whose sum is σ = 30206400. Its totient is φ = 8544960.

The previous prime is 16231723. The next prime is 16231739. The reversal of 16231725 is 52713261.

It is a happy number.

16231725 is a `hidden beast` number, since 1 + 623 + 17 + 25 = 666.

It is not a de Polignac number, because 16231725 - 2¹ = 16231723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16231723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93739 + ... + 93911.

It is an arithmetic number, because the mean of its divisors is an integer number (629300).

Almost surely, 2^16231725 is an apocalyptic number.

16231725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16231725 is a deficient number, since it is larger than the sum of its proper divisors (13974675).

16231725 is a wasteful number, since it uses less digits than its factorization.

16231725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 320 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 16231725 is about 4028.8615017148. The cubic root of 16231725 is about 253.1948641172.

Adding to 16231725 its reverse (52713261), we get a palindrome (68944986).

The spelling of 16231725 in words is "sixteen million, two hundred thirty-one thousand, seven hundred twenty-five".