2573925874021 has 4 divisors (see below), whose sum is σ = 2577038239872. Its totient is φ = 2570813508172.

The previous prime is 2573925874019. The next prime is 2573925874043. The reversal of 2573925874021 is 1204785293752.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2573925874021 - 2¹ = 2573925874019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2573925874081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556181685 + ... + 1556183338.

It is an arithmetic number, because the mean of its divisors is an integer number (644259559968).

Almost surely, 2^{2573925874021} is an apocalyptic number.

It is an amenable number.

2573925874021 is a deficient number, since it is larger than the sum of its proper divisors (3112365851).

2573925874021 is an equidigital number, since it uses as much as digits as its factorization.

2573925874021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112365850.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 2573925874021 in words is "two trillion, five hundred seventy-three billion, nine hundred twenty-five million, eight hundred seventy-four thousand, twenty-one".