2505503002997 has 2 divisors, whose sum is σ = 2505503002998. Its totient is φ = 2505503002996.

The previous prime is 2505503002943. The next prime is 2505503003021. The reversal of 2505503002997 is 7992003055052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2036560180561 + 468942822436 = 1427081^2 + 684794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2505503002997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2505503002907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252751501498 + 1252751501499.

It is an arithmetic number, because the mean of its divisors is an integer number (1252751501499).

Almost surely, 2^{2505503002997} is an apocalyptic number.

It is an amenable number.

2505503002997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505503002997 is an equidigital number, since it uses as much as digits as its factorization.

2505503002997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 850500, while the sum is 47.

The spelling of 2505503002997 in words is "two trillion, five hundred five billion, five hundred three million, two thousand, nine hundred ninety-seven".