145325237 has 4 divisors (see below), whose sum is σ = 146195616. Its totient is φ = 144454860.

The previous prime is 145325227. The next prime is 145325239. The reversal of 145325237 is 732523541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 732523541 = 3331 ⋅219911.

It is a cyclic number.

It is not a de Polignac number, because 145325237 - 2⁴ = 145325221 is a prime.

It is a super-2 number, since 2×145325237² = 42238849018212338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145325239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434939 + ... + 435272.

It is an arithmetic number, because the mean of its divisors is an integer number (36548904).

Almost surely, 2^145325237 is an apocalyptic number.

It is an amenable number.

145325237 is a deficient number, since it is larger than the sum of its proper divisors (870379).

145325237 is an equidigital number, since it uses as much as digits as its factorization.

145325237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870378.

The product of its digits is 25200, while the sum is 32.

The square root of 145325237 is about 12055.0917458143. The cubic root of 145325237 is about 525.7512896014.

Adding to 145325237 its reverse (732523541), we get a palindrome (877848778).

The spelling of 145325237 in words is "one hundred forty-five million, three hundred twenty-five thousand, two hundred thirty-seven".