25618125037553 has 2 divisors, whose sum is σ = 25618125037554. Its totient is φ = 25618125037552.

The previous prime is 25618125037541. The next prime is 25618125037559. The reversal of 25618125037553 is 35573052181652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19209566968384 + 6408558069169 = 4382872^2 + 2531513^2 .

It is a cyclic number.

It is not a de Polignac number, because 25618125037553 - 2¹⁶ = 25618124972017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25618125037495 and 25618125037504.

It is not a weakly prime, because it can be changed into another prime (25618125037559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12809062518776 + 12809062518777.

It is an arithmetic number, because the mean of its divisors is an integer number (12809062518777).

Almost surely, 2^{25618125037553} is an apocalyptic number.

It is an amenable number.

25618125037553 is a deficient number, since it is larger than the sum of its proper divisors (1).

25618125037553 is an equidigital number, since it uses as much as digits as its factorization.

25618125037553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560000, while the sum is 53.

The spelling of 25618125037553 in words is "twenty-five trillion, six hundred eighteen billion, one hundred twenty-five million, thirty-seven thousand, five hundred fifty-three".