2157641136525 has 48 divisors (see below), whose sum is σ = 4077087049728. Its totient is φ = 986308440000.

The previous prime is 2157641136517. The next prime is 2157641136601. The reversal of 2157641136525 is 5256311467512.

It is not a de Polignac number, because 2157641136525 - 2³ = 2157641136517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14706280 + ... + 14852270.

It is an arithmetic number, because the mean of its divisors is an integer number (84939313536).

Almost surely, 2^{2157641136525} is an apocalyptic number.

2157641136525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2157641136525 is a deficient number, since it is larger than the sum of its proper divisors (1919445913203).

2157641136525 is a wasteful number, since it uses less digits than its factorization.

2157641136525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174162 (or 174157 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 48.

The spelling of 2157641136525 in words is "two trillion, one hundred fifty-seven billion, six hundred forty-one million, one hundred thirty-six thousand, five hundred twenty-five".