194720925 has 24 divisors (see below), whose sum is σ = 367930816. Its totient is φ = 89015040.

The previous prime is 194720893. The next prime is 194720963. The reversal of 194720925 is 529027491.

It is not a de Polignac number, because 194720925 - 2⁵ = 194720893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184924 + ... + 185973.

Almost surely, 2^194720925 is an apocalyptic number.

194720925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194720925 is a deficient number, since it is larger than the sum of its proper divisors (173209891).

194720925 is a wasteful number, since it uses less digits than its factorization.

194720925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370917 (or 370912 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 194720925 is about 13954.2439780878. The cubic root of 194720925 is about 579.6122308992.

The spelling of 194720925 in words is "one hundred ninety-four million, seven hundred twenty thousand, nine hundred twenty-five".