1603602025 has 9 divisors (see below), whose sum is σ = 1988714821. Its totient is φ = 1282721440.

The previous prime is 1603602019. The next prime is 1603602059. The reversal of 1603602025 is 5202063061.

The square root of 1603602025 is 40045.

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 80089 + 1603521936 = 283^2 + 40044^2 .

It is not a de Polignac number, because 1603602025 - 2³ = 1603602017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 196221 + ... + 204229.

Almost surely, 2^1603602025 is an apocalyptic number.

1603602025 is the 40045-th square number.

1603602025 is the 20023-rd centered octagonal number.

It is an amenable number.

1603602025 is a deficient number, since it is larger than the sum of its proper divisors (385112796).

1603602025 is an frugal number, since it uses more digits than its factorization.

1603602025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16028 (or 8014 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The cubic root of 1603602025 is about 1170.4841362128.

Multiplying 1603602025 by its sum of digits (25), we get a square (40090050625 = 200225²).

1603602025 divided by its sum of digits (25) gives a square (64144081 = 8009²).

Adding to 1603602025 its reverse (5202063061), we get a palindrome (6805665086).

The spelling of 1603602025 in words is "one billion, six hundred three million, six hundred two thousand, twenty-five".