1602090025 has 12 divisors (see below), whose sum is σ = 1993985100. Its totient is φ = 1276902080.

The previous prime is 1602090019. The next prime is 1602090029. The reversal of 1602090025 is 5200902061.

It can be written as a sum of positive squares in 6 ways, for example, as 665485209 + 936604816 = 25797^2 + 30604^2 .

It is not a de Polignac number, because 1602090025 - 2¹⁹ = 1601565737 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1602090029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112390 + ... + 125839.

It is an arithmetic number, because the mean of its divisors is an integer number (166165425).

Almost surely, 2^1602090025 is an apocalyptic number.

It is an amenable number.

1602090025 is a deficient number, since it is larger than the sum of its proper divisors (391895075).

1602090025 is a wasteful number, since it uses less digits than its factorization.

1602090025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238508 (or 238503 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1602090025 is about 40026.1167864183. The cubic root of 1602090025 is about 1170.1161462120.

Adding to 1602090025 its reverse (5200902061), we get a palindrome (6802992086).

The spelling of 1602090025 in words is "one billion, six hundred two million, ninety thousand, twenty-five".