157643925 has 24 divisors (see below), whose sum is σ = 261007104. Its totient is φ = 83957760.

The previous prime is 157643923. The next prime is 157643933. The reversal of 157643925 is 529346751.

157643925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157643925 - 2¹ = 157643923 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157643921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85564 + ... + 87386.

It is an arithmetic number, because the mean of its divisors is an integer number (10875296).

Almost surely, 2^157643925 is an apocalyptic number.

157643925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157643925 is a deficient number, since it is larger than the sum of its proper divisors (103363179).

157643925 is a wasteful number, since it uses less digits than its factorization.

157643925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989 (or 2984 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The square root of 157643925 is about 12555.6331978917. The cubic root of 157643925 is about 540.2055972948.

The spelling of 157643925 in words is "one hundred fifty-seven million, six hundred forty-three thousand, nine hundred twenty-five".