2507129897 has 2 divisors, whose sum is σ = 2507129898. Its totient is φ = 2507129896.

The previous prime is 2507129831. The next prime is 2507129899. The reversal of 2507129897 is 7989217052.

2507129897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1470032281 + 1037097616 = 38341^2 + 32204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2507129897 is a prime.

Together with 2507129899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2507129899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253564948 + 1253564949.

It is an arithmetic number, because the mean of its divisors is an integer number (1253564949).

Almost surely, 2^2507129897 is an apocalyptic number.

It is an amenable number.

2507129897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2507129897 is an equidigital number, since it uses as much as digits as its factorization.

2507129897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 2507129897 is about 50071.2482069301. The cubic root of 2507129897 is about 1358.4978182067.

The spelling of 2507129897 in words is "two billion, five hundred seven million, one hundred twenty-nine thousand, eight hundred ninety-seven".