25164269381481 has 16 divisors (see below), whose sum is σ = 34377987497280. Its totient is φ = 16363538714880.

The previous prime is 25164269381453. The next prime is 25164269381483. The reversal of 25164269381481 is 18418396246152.

It is not a de Polignac number, because 25164269381481 - 2²⁹ = 25163732510569 is a prime.

It is a super-2 number, since 2×25164269381481² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25164269381483) 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 in 15 ways as a sum of consecutive naturals, for example, 21077716 + ... + 22239573.

It is an arithmetic number, because the mean of its divisors is an integer number (2148624218580).

Almost surely, 2^{25164269381481} is an apocalyptic number.

It is an amenable number.

25164269381481 is a deficient number, since it is larger than the sum of its proper divisors (9213718115799).

25164269381481 is a wasteful number, since it uses less digits than its factorization.

25164269381481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43322056.

The product of its digits is 19906560, while the sum is 60.

The spelling of 25164269381481 in words is "twenty-five trillion, one hundred sixty-four billion, two hundred sixty-nine million, three hundred eighty-one thousand, four hundred eighty-one".