1641265525 has 12 divisors (see below), whose sum is σ = 2039076832. Its totient is φ = 1310491440.

The previous prime is 1641265447. The next prime is 1641265529. The reversal of 1641265525 is 5255621461.

It is not a de Polignac number, because 1641265525 - 2⁷ = 1641265397 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641265529) 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, 49689 + ... + 75838.

Almost surely, 2^1641265525 is an apocalyptic number.

It is an amenable number.

1641265525 is a deficient number, since it is larger than the sum of its proper divisors (397811307).

1641265525 is a wasteful number, since it uses less digits than its factorization.

1641265525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126060 (or 126055 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The square root of 1641265525 is about 40512.5354057235. The cubic root of 1641265525 is about 1179.5769634103.

Adding to 1641265525 its reverse (5255621461), we get a palindrome (6896886986).

The spelling of 1641265525 in words is "one billion, six hundred forty-one million, two hundred sixty-five thousand, five hundred twenty-five".