25571630145 has 16 divisors (see below), whose sum is σ = 42234435072. Its totient is φ = 13198260480.

The previous prime is 25571630137. The next prime is 25571630173. The reversal of 25571630145 is 54103617552.

It is not a de Polignac number, because 25571630145 - 2³ = 25571630137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27495912 + ... + 27496841.

It is an arithmetic number, because the mean of its divisors is an integer number (2639652192).

Almost surely, 2^25571630145 is an apocalyptic number.

It is an amenable number.

25571630145 is a deficient number, since it is larger than the sum of its proper divisors (16662804927).

25571630145 is a wasteful number, since it uses less digits than its factorization.

25571630145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54992792.

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 25571630145 in words is "twenty-five billion, five hundred seventy-one million, six hundred thirty thousand, one hundred forty-five".