11571142425 has 24 divisors (see below), whose sum is σ = 19156321536. Its totient is φ = 6163093440.

The previous prime is 11571142411. The next prime is 11571142441. The reversal of 11571142425 is 52424117511.

It is not a de Polignac number, because 11571142425 - 2¹² = 11571138329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45129 + ... + 158678.

It is an arithmetic number, because the mean of its divisors is an integer number (798180064).

Almost surely, 2^11571142425 is an apocalyptic number.

11571142425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11571142425 is a deficient number, since it is larger than the sum of its proper divisors (7585179111).

11571142425 is a wasteful number, since it uses less digits than its factorization.

11571142425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204577 (or 204572 counting only the distinct ones).

The product of its digits is 11200, while the sum is 33.

Adding to 11571142425 its reverse (52424117511), we get a palindrome (63995259936).

The spelling of 11571142425 in words is "eleven billion, five hundred seventy-one million, one hundred forty-two thousand, four hundred twenty-five".