161425200 has 240 divisors, whose sum is σ = 563776416. Its totient is φ = 39321600.

The previous prime is 161425193. The next prime is 161425207. The reversal of 161425200 is 2524161.

161425200 is nontrivially palindromic in base 9.

161425200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161425193) and next prime (161425207).

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161425207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 836304 + ... + 836496.

Almost surely, 2^161425200 is an apocalyptic number.

161425200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161425200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281888208).

161425200 is an abundant number, since it is smaller than the sum of its proper divisors (402351216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161425200 is a wasteful number, since it uses less digits than its factorization.

161425200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 161425200 is about 12705.3217196575. The cubic root of 161425200 is about 544.4906724904.

Adding to 161425200 its reverse (2524161), we get a palindrome (163949361).

The spelling of 161425200 in words is "one hundred sixty-one million, four hundred twenty-five thousand, two hundred".