1641323025 has 36 divisors (see below), whose sum is σ = 2968375488. Its totient is φ = 866861280.

The previous prime is 1641323017. The next prime is 1641323041. The reversal of 1641323025 is 5203231461.

1641323025 is a `hidden beast` number, since 16 + 413 + 230 + 2 + 5 = 666.

It is not a de Polignac number, because 1641323025 - 2³ = 1641323017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1641323025.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 12237 + ... + 58586.

Almost surely, 2^1641323025 is an apocalyptic number.

1641323025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1641323025 is a deficient number, since it is larger than the sum of its proper divisors (1327052463).

1641323025 is a wasteful number, since it uses less digits than its factorization.

1641323025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70942 (or 70934 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1641323025 is about 40513.2450564010. The cubic root of 1641323025 is about 1179.5907383261.

Adding to 1641323025 its reverse (5203231461), we get a palindrome (6844554486).

The spelling of 1641323025 in words is "one billion, six hundred forty-one million, three hundred twenty-three thousand, twenty-five".