25297224541 has 2 divisors, whose sum is σ = 25297224542. Its totient is φ = 25297224540.

The previous prime is 25297224517. The next prime is 25297224551. The reversal of 25297224541 is 14542279252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24665958916 + 631265625 = 157054^2 + 25125^2 .

It is a cyclic number.

It is not a de Polignac number, because 25297224541 - 2¹⁷ = 25297093469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25297224551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12648612270 + 12648612271.

It is an arithmetic number, because the mean of its divisors is an integer number (12648612271).

Almost surely, 2^25297224541 is an apocalyptic number.

It is an amenable number.

25297224541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25297224541 is an equidigital number, since it uses as much as digits as its factorization.

25297224541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 43.

The spelling of 25297224541 in words is "twenty-five billion, two hundred ninety-seven million, two hundred twenty-four thousand, five hundred forty-one".