1516725 has 60 divisors (see below), whose sum is σ = 3240864. Its totient is φ = 686880.

The previous prime is 1516709. The next prime is 1516733. The reversal of 1516725 is 5276151.

1516725 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 1516725 - 2⁴ = 1516709 is a prime.

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

1516725 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 14122 + ... + 14228.

2^1516725 is an apocalyptic number.

1516725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1516725 is an abundant number, since it is smaller than the sum of its proper divisors (1724139).

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

1516725 is a wasteful number, since it uses less digits than its factorization.

1516725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 122 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 1516725 is about 1231.5538965064. The cubic root of 1516725 is about 114.8953048412.

The spelling of 1516725 in words is "one million, five hundred sixteen thousand, seven hundred twenty-five".