25782587221151 has 2 divisors, whose sum is σ = 25782587221152. Its totient is φ = 25782587221150.

The previous prime is 25782587221133. The next prime is 25782587221159. The reversal of 25782587221151 is 15112278528752.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25782587221151 - 2¹⁸ = 25782586959007 is a prime.

It is a super-3 number, since 3×25782587221151³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25782587221159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12891293610575 + 12891293610576.

It is an arithmetic number, because the mean of its divisors is an integer number (12891293610576).

Almost surely, 2^{25782587221151} is an apocalyptic number.

25782587221151 is a deficient number, since it is larger than the sum of its proper divisors (1).

25782587221151 is an equidigital number, since it uses as much as digits as its factorization.

25782587221151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272000, while the sum is 56.

The spelling of 25782587221151 in words is "twenty-five trillion, seven hundred eighty-two billion, five hundred eighty-seven million, two hundred twenty-one thousand, one hundred fifty-one".