145225512 has 96 divisors (see below), whose sum is σ = 422042400. Its totient is φ = 44972928.

The previous prime is 145225439. The next prime is 145225541. The reversal of 145225512 is 215522541.

145225512 is a `hidden beast` number, since 145 + 2 + 2 + 5 + 512 = 666.

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, 71503 + ... + 73505.

It is an arithmetic number, because the mean of its divisors is an integer number (4396275).

Almost surely, 2^145225512 is an apocalyptic number.

145225512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145225512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211021200).

145225512 is an abundant number, since it is smaller than the sum of its proper divisors (276816888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145225512 is a wasteful number, since it uses less digits than its factorization.

145225512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087 (or 2080 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 145225512 is about 12050.9548169429. The cubic root of 145225512 is about 525.6310018341.

The spelling of 145225512 in words is "one hundred forty-five million, two hundred twenty-five thousand, five hundred twelve".