5251025449 has 2 divisors, whose sum is σ = 5251025450. Its totient is φ = 5251025448.

The previous prime is 5251025341. The next prime is 5251025477. The reversal of 5251025449 is 9445201525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3692749824 + 1558275625 = 60768^2 + 39475^2 .

It is a cyclic number.

It is not a de Polignac number, because 5251025449 - 2¹⁷ = 5250894377 is a prime.

It is not a weakly prime, because it can be changed into another prime (5255025449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2625512724 + 2625512725.

It is an arithmetic number, because the mean of its divisors is an integer number (2625512725).

Almost surely, 2^5251025449 is an apocalyptic number.

It is an amenable number.

5251025449 is a deficient number, since it is larger than the sum of its proper divisors (1).

5251025449 is an equidigital number, since it uses as much as digits as its factorization.

5251025449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 5251025449 is about 72463.9596558179. The cubic root of 5251025449 is about 1738.1264734272.

The spelling of 5251025449 in words is "five billion, two hundred fifty-one million, twenty-five thousand, four hundred forty-nine".