145125403 has 2 divisors, whose sum is σ = 145125404. Its totient is φ = 145125402.

The previous prime is 145125389. The next prime is 145125443. The reversal of 145125403 is 304521541.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145125403 - 2¹⁷ = 144994331 is a prime.

It is a super-2 number, since 2×145125403² = 42122765191824818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145125443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72562701 + 72562702.

It is an arithmetic number, because the mean of its divisors is an integer number (72562702).

Almost surely, 2^145125403 is an apocalyptic number.

145125403 is a deficient number, since it is larger than the sum of its proper divisors (1).

145125403 is an equidigital number, since it uses as much as digits as its factorization.

145125403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 145125403 is about 12046.8005296012. The cubic root of 145125403 is about 525.5101954897.

Adding to 145125403 its reverse (304521541), we get a palindrome (449646944).

The spelling of 145125403 in words is "one hundred forty-five million, one hundred twenty-five thousand, four hundred three".