2505749453 has 2 divisors, whose sum is σ = 2505749454. Its totient is φ = 2505749452.

The previous prime is 2505749429. The next prime is 2505749489. The reversal of 2505749453 is 3549475052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1265794084 + 1239955369 = 35578^2 + 35213^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505749453 - 2²⁸ = 2237313997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2505740453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252874726 + 1252874727.

It is an arithmetic number, because the mean of its divisors is an integer number (1252874727).

Almost surely, 2^2505749453 is an apocalyptic number.

It is an amenable number.

2505749453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505749453 is an equidigital number, since it uses as much as digits as its factorization.

2505749453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 44.

The square root of 2505749453 is about 50057.4615117467. The cubic root of 2505749453 is about 1358.2484394968.

The spelling of 2505749453 in words is "two billion, five hundred five million, seven hundred forty-nine thousand, four hundred fifty-three".