145222025 has 24 divisors (see below), whose sum is σ = 194779200. Its totient is φ = 106770240.

The previous prime is 145222013. The next prime is 145222037. The reversal of 145222025 is 520222541.

145222025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145222013) and next prime (145222037).

It is not a de Polignac number, because 145222025 - 2⁴ = 145222009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84626 + ... + 86324.

It is an arithmetic number, because the mean of its divisors is an integer number (8115800).

Almost surely, 2^145222025 is an apocalyptic number.

It is an amenable number.

145222025 is a deficient number, since it is larger than the sum of its proper divisors (49557175).

145222025 is a wasteful number, since it uses less digits than its factorization.

145222025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985 (or 1980 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 145222025 is about 12050.8101387417. The cubic root of 145222025 is about 525.6267948368.

Adding to 145222025 its reverse (520222541), we get a palindrome (665444566).

The spelling of 145222025 in words is "one hundred forty-five million, two hundred twenty-two thousand, twenty-five".