145019625 has 16 divisors (see below), whose sum is σ = 241313280. Its totient is φ = 77343600.

The previous prime is 145019603. The next prime is 145019629. The reversal of 145019625 is 526910541.

It is not a de Polignac number, because 145019625 - 2⁵ = 145019593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145019629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192985 + ... + 193734.

It is an arithmetic number, because the mean of its divisors is an integer number (15082080).

Almost surely, 2^145019625 is an apocalyptic number.

145019625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145019625 is a deficient number, since it is larger than the sum of its proper divisors (96293655).

145019625 is an equidigital number, since it uses as much as digits as its factorization.

145019625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386737 (or 386727 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 145019625 is about 12042.4094349927. The cubic root of 145019625 is about 525.3824877116.

The spelling of 145019625 in words is "one hundred forty-five million, nineteen thousand, six hundred twenty-five".