161283925 has 48 divisors (see below), whose sum is σ = 227646144. Its totient is φ = 113256000.

The previous prime is 161283919. The next prime is 161283949. The reversal of 161283925 is 529382161.

It is not a de Polignac number, because 161283925 - 2¹⁷ = 161152853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 1231110 + ... + 1231240.

It is an arithmetic number, because the mean of its divisors is an integer number (4742628).

Almost surely, 2^161283925 is an apocalyptic number.

It is an amenable number.

161283925 is a deficient number, since it is larger than the sum of its proper divisors (66362219).

161283925 is a wasteful number, since it uses less digits than its factorization.

161283925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 184 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 161283925 is about 12699.7608245195. The cubic root of 161283925 is about 544.3317849252.

The spelling of 161283925 in words is "one hundred sixty-one million, two hundred eighty-three thousand, nine hundred twenty-five".