25457581327 has 4 divisors (see below), whose sum is σ = 25458707376. Its totient is φ = 25456455280.

The previous prime is 25457581321. The next prime is 25457581333. The reversal of 25457581327 is 72318575452.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25457581321) and next prime (25457581333).

It is a cyclic number.

It is not a de Polignac number, because 25457581327 - 2⁷ = 25457581199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25457581321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528403 + ... + 574564.

It is an arithmetic number, because the mean of its divisors is an integer number (6364676844).

Almost surely, 2^25457581327 is an apocalyptic number.

25457581327 is a deficient number, since it is larger than the sum of its proper divisors (1126049).

25457581327 is a wasteful number, since it uses less digits than its factorization.

25457581327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126048.

The product of its digits is 2352000, while the sum is 49.

The spelling of 25457581327 in words is "twenty-five billion, four hundred fifty-seven million, five hundred eighty-one thousand, three hundred twenty-seven".