161524425 has 24 divisors (see below), whose sum is σ = 274276096. Its totient is φ = 83816640.

The previous prime is 161524417. The next prime is 161524439. The reversal of 161524425 is 524425161.

It is not a de Polignac number, because 161524425 - 2³ = 161524417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 161524392 and 161524401.

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, 26329 + ... + 31878.

Almost surely, 2^161524425 is an apocalyptic number.

161524425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161524425 is a deficient number, since it is larger than the sum of its proper divisors (112751671).

161524425 is a wasteful number, since it uses less digits than its factorization.

161524425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58257 (or 58252 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 161524425 is about 12709.2259795788. The cubic root of 161524425 is about 544.6022123263.

Adding to 161524425 its reverse (524425161), we get a palindrome (685949586).

The spelling of 161524425 in words is "one hundred sixty-one million, five hundred twenty-four thousand, four hundred twenty-five".