25210512361 has 2 divisors, whose sum is σ = 25210512362. Its totient is φ = 25210512360.

The previous prime is 25210512347. The next prime is 25210512367. The reversal of 25210512361 is 16321501252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18480771136 + 6729741225 = 135944^2 + 82035^2 .

It is a cyclic number.

It is not a de Polignac number, because 25210512361 - 2⁷ = 25210512233 is a prime.

It is not a weakly prime, because it can be changed into another prime (25210512367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12605256180 + 12605256181.

It is an arithmetic number, because the mean of its divisors is an integer number (12605256181).

Almost surely, 2^25210512361 is an apocalyptic number.

It is an amenable number.

25210512361 is a deficient number, since it is larger than the sum of its proper divisors (1).

25210512361 is an equidigital number, since it uses as much as digits as its factorization.

25210512361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 25210512361 in words is "twenty-five billion, two hundred ten million, five hundred twelve thousand, three hundred sixty-one".