25051560455501 has 2 divisors, whose sum is σ = 25051560455502. Its totient is φ = 25051560455500.

The previous prime is 25051560455497. The next prime is 25051560455561. The reversal of 25051560455501 is 10555406515052.

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., 19345051686601 + 5706508768900 = 4398301^2 + 2388830^2 .

It is a cyclic number.

It is not a de Polignac number, because 25051560455501 - 2² = 25051560455497 is a prime.

It is a super-2 number, since 2×25051560455501² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25051560455561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12525780227750 + 12525780227751.

It is an arithmetic number, because the mean of its divisors is an integer number (12525780227751).

Almost surely, 2^{25051560455501} is an apocalyptic number.

It is an amenable number.

25051560455501 is a deficient number, since it is larger than the sum of its proper divisors (1).

25051560455501 is an equidigital number, since it uses as much as digits as its factorization.

25051560455501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750000, while the sum is 44.

The spelling of 25051560455501 in words is "twenty-five trillion, fifty-one billion, five hundred sixty million, four hundred fifty-five thousand, five hundred one".