25445471271 has 12 divisors (see below), whose sum is σ = 37291985976. Its totient is φ = 15421497520.

The previous prime is 25445471257. The next prime is 25445471281. The reversal of 25445471271 is 17217454452.

It is not a de Polignac number, because 25445471271 - 2¹⁵ = 25445438503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25445471231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35048496 + ... + 35049221.

It is an arithmetic number, because the mean of its divisors is an integer number (3107665498).

Almost surely, 2^25445471271 is an apocalyptic number.

25445471271 is a deficient number, since it is larger than the sum of its proper divisors (11846514705).

25445471271 is a wasteful number, since it uses less digits than its factorization.

25445471271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70097742 (or 70097731 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The spelling of 25445471271 in words is "twenty-five billion, four hundred forty-five million, four hundred seventy-one thousand, two hundred seventy-one".