1616525 has 6 divisors (see below), whose sum is σ = 2004522. Its totient is φ = 1293200.

The previous prime is 1616519. The next prime is 1616533. The reversal of 1616525 is 5256161.

It can be written as a sum of positive squares in 3 ways, for example, as 11236 + 1605289 = 106^2 + 1267^2 .

It is not a de Polignac number, because 1616525 - 2⁸ = 1616269 is a prime.

It is a super-2 number, since 2×1616525² = 5226306151250, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1616494 and 1616503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32306 + ... + 32355.

It is an arithmetic number, because the mean of its divisors is an integer number (334087).

2^1616525 is an apocalyptic number.

It is an amenable number.

1616525 is a deficient number, since it is larger than the sum of its proper divisors (387997).

1616525 is an equidigital number, since it uses as much as digits as its factorization.

1616525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64671 (or 64666 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 1616525 is about 1271.4263643641. The cubic root of 1616525 is about 117.3619927911.

It can be divided in two parts, 161 and 6525, that multiplied together give a triangular number (1050525 = T₁₄₄₉).

The spelling of 1616525 in words is "one million, six hundred sixteen thousand, five hundred twenty-five".