193913925 has 24 divisors (see below), whose sum is σ = 321050880. Its totient is φ = 103276800.

The previous prime is 193913921. The next prime is 193913927. The reversal of 193913925 is 529319391.

193913925 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 193913925 - 2² = 193913921 is a prime.

It is a super-2 number, since 2×193913925² = 75205220617811250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193913921) 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, 73021 + ... + 75629.

It is an arithmetic number, because the mean of its divisors is an integer number (13377120).

Almost surely, 2^193913925 is an apocalyptic number.

193913925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

193913925 is a deficient number, since it is larger than the sum of its proper divisors (127136955).

193913925 is a wasteful number, since it uses less digits than its factorization.

193913925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613 (or 3608 counting only the distinct ones).

The product of its digits is 65610, while the sum is 42.

The square root of 193913925 is about 13925.2980219455. The cubic root of 193913925 is about 578.8104086021.

The spelling of 193913925 in words is "one hundred ninety-three million, nine hundred thirteen thousand, nine hundred twenty-five".