145931625 has 160 divisors (see below), whose sum is σ = 326177280. Its totient is φ = 63504000.

The previous prime is 145931623. The next prime is 145931627. The reversal of 145931625 is 526139541.

145931625 is a `hidden beast` number, since 1 + 4 + 593 + 1 + 62 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (145931623) and next prime (145931627).

It is not a de Polignac number, because 145931625 - 2¹ = 145931623 is a prime.

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 145931625.

It is not an unprimeable number, because it can be changed into a prime (145931623) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 2055340 + ... + 2055410.

It is an arithmetic number, because the mean of its divisors is an integer number (2038608).

Almost surely, 2^145931625 is an apocalyptic number.

145931625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145931625 is an abundant number, since it is smaller than the sum of its proper divisors (180245655).

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

145931625 is an equidigital number, since it uses as much as digits as its factorization.

145931625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 115 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 145931625 is about 12080.2162646204. The cubic root of 145931625 is about 526.4815295344.

The spelling of 145931625 in words is "one hundred forty-five million, nine hundred thirty-one thousand, six hundred twenty-five".