145025689 has 8 divisors (see below), whose sum is σ = 152771040. Its totient is φ = 137291616.

The previous prime is 145025677. The next prime is 145025729. The reversal of 145025689 is 986520541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145025689 - 2⁷ = 145025561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145023689) 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 7 ways as a sum of consecutive naturals, for example, 41982 + ... + 45304.

It is an arithmetic number, because the mean of its divisors is an integer number (19096380).

Almost surely, 2^145025689 is an apocalyptic number.

145025689 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

145025689 is a deficient number, since it is larger than the sum of its proper divisors (7745351).

145025689 is a wasteful number, since it uses less digits than its factorization.

145025689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5639.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 145025689 is about 12042.6612092178. The cubic root of 145025689 is about 525.3898105710.

The spelling of 145025689 in words is "one hundred forty-five million, twenty-five thousand, six hundred eighty-nine".