1641464724525 has 12 divisors (see below), whose sum is σ = 2713888344672. Its totient is φ = 875447853040.

The previous prime is 1641464724509. The next prime is 1641464724527. The reversal of 1641464724525 is 5254274641461.

It is not a de Polignac number, because 1641464724525 - 2⁴ = 1641464724509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641464724527) 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, 10943098089 + ... + 10943098238.

It is an arithmetic number, because the mean of its divisors is an integer number (226157362056).

Almost surely, 2^{1641464724525} is an apocalyptic number.

1641464724525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1641464724525 is a deficient number, since it is larger than the sum of its proper divisors (1072423620147).

1641464724525 is a wasteful number, since it uses less digits than its factorization.

1641464724525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21886196340 (or 21886196335 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 51.

The spelling of 1641464724525 in words is "one trillion, six hundred forty-one billion, four hundred sixty-four million, seven hundred twenty-four thousand, five hundred twenty-five".