146640225 has 12 divisors (see below), whose sum is σ = 242445296. Its totient is φ = 78208080.

The previous prime is 146640209. The next prime is 146640229. The reversal of 146640225 is 522046641.

146640225 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 146640225 - 2⁴ = 146640209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146640192 and 146640201.

It is not an unprimeable number, because it can be changed into a prime (146640229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 977527 + ... + 977676.

Almost surely, 2^146640225 is an apocalyptic number.

146640225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

146640225 is a deficient number, since it is larger than the sum of its proper divisors (95805071).

146640225 is a wasteful number, since it uses less digits than its factorization.

146640225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955216 (or 1955211 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 146640225 is about 12109.5096927993. The cubic root of 146640225 is about 527.3322992136.

Adding to 146640225 its reverse (522046641), we get a palindrome (668686866).

The spelling of 146640225 in words is "one hundred forty-six million, six hundred forty thousand, two hundred twenty-five".