145522250 has 32 divisors (see below), whose sum is σ = 273134160. Its totient is φ = 58056000.

The previous prime is 145522231. The next prime is 145522283. The reversal of 145522250 is 52225541.

145522250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2982529 + 142539721 = 1727^2 + 11939^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176840 + ... + 177660.

Almost surely, 2^145522250 is an apocalyptic number.

145522250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145522250 is a deficient number, since it is larger than the sum of its proper divisors (127611910).

145522250 is an equidigital number, since it uses as much as digits as its factorization.

145522250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 145522250 is about 12063.2603387310. The cubic root of 145522250 is about 525.9887639944.

Adding to 145522250 its reverse (52225541), we get a palindrome (197747791).

The spelling of 145522250 in words is "one hundred forty-five million, five hundred twenty-two thousand, two hundred fifty".