1628525 has 6 divisors (see below), whose sum is σ = 2019402. Its totient is φ = 1302800.

The previous prime is 1628507. The next prime is 1628551. The reversal of 1628525 is 5258261.

It can be written as a sum of positive squares in 3 ways, for example, as 438244 + 1190281 = 662^2 + 1091^2 .

It is not a de Polignac number, because 1628525 - 2¹⁰ = 1627501 is a prime.

It is a Duffinian number.

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, 32546 + ... + 32595.

It is an arithmetic number, because the mean of its divisors is an integer number (336567).

2^1628525 is an apocalyptic number.

It is an amenable number.

1628525 is a deficient number, since it is larger than the sum of its proper divisors (390877).

1628525 is an equidigital number, since it uses as much as digits as its factorization.

1628525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65151 (or 65146 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 1628525 is about 1276.1367481583. The cubic root of 1628525 is about 117.6516827839.

The spelling of 1628525 in words is "one million, six hundred twenty-eight thousand, five hundred twenty-five".