25412021497 has 2 divisors, whose sum is σ = 25412021498. Its totient is φ = 25412021496.

The previous prime is 25412021423. The next prime is 25412021519. The reversal of 25412021497 is 79412021452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25117178256 + 294843241 = 158484^2 + 17171^2 .

It is a cyclic number.

It is not a de Polignac number, because 25412021497 - 2²⁷ = 25277803769 is a prime.

It is not a weakly prime, because it can be changed into another prime (25412021597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12706010748 + 12706010749.

It is an arithmetic number, because the mean of its divisors is an integer number (12706010749).

Almost surely, 2^25412021497 is an apocalyptic number.

It is an amenable number.

25412021497 is a deficient number, since it is larger than the sum of its proper divisors (1).

25412021497 is an equidigital number, since it uses as much as digits as its factorization.

25412021497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 25412021497 in words is "twenty-five billion, four hundred twelve million, twenty-one thousand, four hundred ninety-seven".