25630470497 has 2 divisors, whose sum is σ = 25630470498. Its totient is φ = 25630470496.

The previous prime is 25630470491. The next prime is 25630470587. The reversal of 25630470497 is 79407403652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24322273936 + 1308196561 = 155956^2 + 36169^2 .

It is a cyclic number.

It is not a de Polignac number, because 25630470497 - 2⁶ = 25630470433 is a prime.

It is not a weakly prime, because it can be changed into another prime (25630470491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12815235248 + 12815235249.

It is an arithmetic number, because the mean of its divisors is an integer number (12815235249).

Almost surely, 2^25630470497 is an apocalyptic number.

It is an amenable number.

25630470497 is a deficient number, since it is larger than the sum of its proper divisors (1).

25630470497 is an equidigital number, since it uses as much as digits as its factorization.

25630470497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 25630470497 in words is "twenty-five billion, six hundred thirty million, four hundred seventy thousand, four hundred ninety-seven".