145225541 has 2 divisors, whose sum is σ = 145225542. Its totient is φ = 145225540.

The previous prime is 145225439. The next prime is 145225547. The reversal of 145225541 is 145522541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133494916 + 11730625 = 11554^2 + 3425^2 .

It is a cyclic number.

It is not a de Polignac number, because 145225541 - 2¹⁰ = 145224517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145225547) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72612770 + 72612771.

It is an arithmetic number, because the mean of its divisors is an integer number (72612771).

Almost surely, 2^145225541 is an apocalyptic number.

It is an amenable number.

145225541 is a deficient number, since it is larger than the sum of its proper divisors (1).

145225541 is an equidigital number, since it uses as much as digits as its factorization.

145225541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8000, while the sum is 29.

The square root of 145225541 is about 12050.9560201670. The cubic root of 145225541 is about 525.6310368217.

The spelling of 145225541 in words is "one hundred forty-five million, two hundred twenty-five thousand, five hundred forty-one".