25271066457 has 96 divisors (see below), whose sum is σ = 47643628032. Its totient is φ = 12526036992.

The previous prime is 25271066449. The next prime is 25271066459. The reversal of 25271066457 is 75466017252.

25271066457 is a `hidden beast` number, since 2 + 527 + 10 + 6 + 64 + 57 = 666.

It is not a de Polignac number, because 25271066457 - 2³ = 25271066449 is a prime.

It is a super-2 number, since 2×25271066457² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25271066459) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13462603 + ... + 13464479.

It is an arithmetic number, because the mean of its divisors is an integer number (496287792).

Almost surely, 2^25271066457 is an apocalyptic number.

It is an amenable number.

25271066457 is a deficient number, since it is larger than the sum of its proper divisors (22372561575).

25271066457 is a wasteful number, since it uses less digits than its factorization.

25271066457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887 (or 2884 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 25271066457 in words is "twenty-five billion, two hundred seventy-one million, sixty-six thousand, four hundred fifty-seven".