157621125225 has 24 divisors (see below), whose sum is σ = 260674793920. Its totient is φ = 84040557120.

The previous prime is 157621125217. The next prime is 157621125227. The reversal of 157621125225 is 522521126751.

It is not a de Polignac number, because 157621125225 - 2³ = 157621125217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157621125227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35005 + ... + 562554.

Almost surely, 2^157621125225 is an apocalyptic number.

157621125225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157621125225 is a deficient number, since it is larger than the sum of its proper divisors (103053668695).

157621125225 is a wasteful number, since it uses less digits than its factorization.

157621125225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601089 (or 601084 counting only the distinct ones).

The product of its digits is 84000, while the sum is 39.

The spelling of 157621125225 in words is "one hundred fifty-seven billion, six hundred twenty-one million, one hundred twenty-five thousand, two hundred twenty-five".