145355625 has 30 divisors (see below), whose sum is σ = 262373826. Its totient is φ = 77520000.

The previous prime is 145355603. The next prime is 145355633. The reversal of 145355625 is 526553541.

It can be written as a sum of positive squares in 5 ways, for example, as 74442384 + 70913241 = 8628^2 + 8421^2 .

It is not a de Polignac number, because 145355625 - 2⁸ = 145355369 is a prime.

It is a super-3 number, since 3×145355625³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145355625.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7296 + ... + 18545.

Almost surely, 2^145355625 is an apocalyptic number.

145355625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145355625 is a deficient number, since it is larger than the sum of its proper divisors (117018201).

145355625 is an equidigital number, since it uses as much as digits as its factorization.

145355625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25867 (or 25849 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 145355625 is about 12056.3520602212. The cubic root of 145355625 is about 525.7879325068.

The spelling of 145355625 in words is "one hundred forty-five million, three hundred fifty-five thousand, six hundred twenty-five".