2500755749 has 2 divisors, whose sum is σ = 2500755750. Its totient is φ = 2500755748.

The previous prime is 2500755727. The next prime is 2500755757. The reversal of 2500755749 is 9475570052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2361279649 + 139476100 = 48593^2 + 11810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2500755749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2500755449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250377874 + 1250377875.

It is an arithmetic number, because the mean of its divisors is an integer number (1250377875).

Almost surely, 2^2500755749 is an apocalyptic number.

It is an amenable number.

2500755749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500755749 is an equidigital number, since it uses as much as digits as its factorization.

2500755749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441000, while the sum is 44.

The square root of 2500755749 is about 50007.5569189298. The cubic root of 2500755749 is about 1357.3455557454.

The spelling of 2500755749 in words is "two billion, five hundred million, seven hundred fifty-five thousand, seven hundred forty-nine".