25670618133553 has 2 divisors, whose sum is σ = 25670618133554. Its totient is φ = 25670618133552.

The previous prime is 25670618133529. The next prime is 25670618133607. The reversal of 25670618133553 is 35533181607652.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23420402128369 + 2250216005184 = 4839463^2 + 1500072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25670618133553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25670618133494 and 25670618133503.

It is not a weakly prime, because it can be changed into another prime (25670618137553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12835309066776 + 12835309066777.

It is an arithmetic number, because the mean of its divisors is an integer number (12835309066777).

Almost surely, 2^{25670618133553} is an apocalyptic number.

It is an amenable number.

25670618133553 is a deficient number, since it is larger than the sum of its proper divisors (1).

25670618133553 is an equidigital number, since it uses as much as digits as its factorization.

25670618133553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608000, while the sum is 55.

The spelling of 25670618133553 in words is "twenty-five trillion, six hundred seventy billion, six hundred eighteen million, one hundred thirty-three thousand, five hundred fifty-three".