1628526025 has 27 divisors (see below), whose sum is σ = 2351104821. Its totient is φ = 1115735040.

The previous prime is 1628526023. The next prime is 1628526041. The reversal of 1628526025 is 5206258261.

The square root of 1628526025 is 40355.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 45441081 + 1583084944 = 6741^2 + 39788^2 .

It is not a de Polignac number, because 1628526025 - 2¹ = 1628526023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1628526023) 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 26 ways as a sum of consecutive naturals, for example, 1411849 + ... + 1413001.

Almost surely, 2^1628526025 is an apocalyptic number.

1628526025 is the 40355-th square number.

1628526025 is the 20178-th centered octagonal number.

It is an amenable number.

1628526025 is a deficient number, since it is larger than the sum of its proper divisors (722578796).

1628526025 is an frugal number, since it uses more digits than its factorization.

1628526025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The cubic root of 1628526025 is about 1176.5170746742.

Multiplying 1628526025 by its product of nonzero digits (57600), we get a square (93803099040000 = 9685200²).

The spelling of 1628526025 in words is "one billion, six hundred twenty-eight million, five hundred twenty-six thousand, twenty-five".