2540323025453 has 4 divisors (see below), whose sum is σ = 2540327429340. Its totient is φ = 2540318621568.

The previous prime is 2540323025437. The next prime is 2540323025459. The reversal of 2540323025453 is 3545203230452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130883321284 + 2409439704169 = 361778^2 + 1552237^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540323025453 - 2⁴ = 2540323025437 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 (2540323025459) 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, 1177958 + ... + 2543271.

It is an arithmetic number, because the mean of its divisors is an integer number (635081857335).

Almost surely, 2^{2540323025453} is an apocalyptic number.

It is an amenable number.

2540323025453 is a deficient number, since it is larger than the sum of its proper divisors (4403887).

2540323025453 is an equidigital number, since it uses as much as digits as its factorization.

2540323025453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4403886.

The product of its (nonzero) digits is 432000, while the sum is 38.

The spelling of 2540323025453 in words is "two trillion, five hundred forty billion, three hundred twenty-three million, twenty-five thousand, four hundred fifty-three".