25431022402397 has 2 divisors, whose sum is σ = 25431022402398. Its totient is φ = 25431022402396.

The previous prime is 25431022402367. The next prime is 25431022402427. The reversal of 25431022402397 is 79320422013452.

It is a balanced prime because it is at equal distance from previous prime (25431022402367) and next prime (25431022402427).

It can be written as a sum of positive squares in only one way, i.e., 22801140702916 + 2629881699481 = 4775054^2 + 1621691^2 .

It is a cyclic number.

It is not a de Polignac number, because 25431022402397 - 2¹⁰ = 25431022401373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25431022402367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12715511201198 + 12715511201199.

It is an arithmetic number, because the mean of its divisors is an integer number (12715511201199).

Almost surely, 2^{25431022402397} is an apocalyptic number.

It is an amenable number.

25431022402397 is a deficient number, since it is larger than the sum of its proper divisors (1).

25431022402397 is an equidigital number, since it uses as much as digits as its factorization.

25431022402397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 25431022402397 in words is "twenty-five trillion, four hundred thirty-one billion, twenty-two million, four hundred two thousand, three hundred ninety-seven".