145214225 has 24 divisors (see below), whose sum is σ = 198445632. Its totient is φ = 104731200.

The previous prime is 145214219. The next prime is 145214231. The reversal of 145214225 is 522412541.

It is an interprime number because it is at equal distance from previous prime (145214219) and next prime (145214231).

It is not a de Polignac number, because 145214225 - 2¹⁴ = 145197841 is a prime.

It is a super-2 number, since 2×145214225² = 42174342284701250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145214194 and 145214203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8780 + ... + 19170.

It is an arithmetic number, because the mean of its divisors is an integer number (8268568).

Almost surely, 2^145214225 is an apocalyptic number.

It is an amenable number.

145214225 is a deficient number, since it is larger than the sum of its proper divisors (53231407).

145214225 is a wasteful number, since it uses less digits than its factorization.

145214225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10457 (or 10452 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 145214225 is about 12050.4865047018. The cubic root of 145214225 is about 525.6173840458.

Adding to 145214225 its reverse (522412541), we get a palindrome (667626766).

The spelling of 145214225 in words is "one hundred forty-five million, two hundred fourteen thousand, two hundred twenty-five".