145422250 has 32 divisors (see below), whose sum is σ = 288252432. Its totient is φ = 54745600.

The previous prime is 145422229. The next prime is 145422283. The reversal of 145422250 is 52224541.

It can be written as a sum of positive squares in 8 ways, for example, as 48734361 + 96687889 = 6981^2 + 9833^2 .

It is a super-2 number, since 2×145422250² = 42295261590125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 12859 + ... + 21358.

Almost surely, 2^145422250 is an apocalyptic number.

145422250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145422250 is a deficient number, since it is larger than the sum of its proper divisors (142830182).

145422250 is a wasteful number, since it uses less digits than its factorization.

145422250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34251 (or 34241 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 145422250 is about 12059.1148099684. The cubic root of 145422250 is about 525.8682533754.

Adding to 145422250 its reverse (52224541), we get a palindrome (197646791).

The spelling of 145422250 in words is "one hundred forty-five million, four hundred twenty-two thousand, two hundred fifty".