145213325 has 12 divisors (see below), whose sum is σ = 180215028. Its totient is φ = 116073600.

The previous prime is 145213319. The next prime is 145213361. The reversal of 145213325 is 523312541.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 30680521 + 114532804 = 5539^2 + 10702^2 .

It is not a de Polignac number, because 145213325 - 2⁴ = 145213309 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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 = 145213294 and 145213303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52169 + ... + 54881.

It is an arithmetic number, because the mean of its divisors is an integer number (15017919).

Almost surely, 2^145213325 is an apocalyptic number.

It is an amenable number.

145213325 is a deficient number, since it is larger than the sum of its proper divisors (35001703).

145213325 is a wasteful number, since it uses less digits than its factorization.

145213325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864 (or 4859 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 145213325 is about 12050.4491617533. The cubic root of 145213325 is about 525.6162981636.

Adding to 145213325 its reverse (523312541), we get a palindrome (668525866).

The spelling of 145213325 in words is "one hundred forty-five million, two hundred thirteen thousand, three hundred twenty-five".