2545421725 has 96 divisors (see below), whose sum is σ = 4085095680. Its totient is φ = 1527552000.

The previous prime is 2545421701. The next prime is 2545421741. The reversal of 2545421725 is 5271245452.

It is not a de Polignac number, because 2545421725 - 2⁵ = 2545421693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6223321 + ... + 6223729.

It is an arithmetic number, because the mean of its divisors is an integer number (42553080).

Almost surely, 2^2545421725 is an apocalyptic number.

2545421725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2545421725 is a deficient number, since it is larger than the sum of its proper divisors (1539673955).

2545421725 is a wasteful number, since it uses less digits than its factorization.

2545421725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 546 counting only the distinct ones).

The product of its digits is 112000, while the sum is 37.

The square root of 2545421725 is about 50452.1726489554. The cubic root of 2545421725 is about 1365.3790938551.

The spelling of 2545421725 in words is "two billion, five hundred forty-five million, four hundred twenty-one thousand, seven hundred twenty-five".