145135625 has 10 divisors (see below), whose sum is σ = 181362258. Its totient is φ = 116108000.

The previous prime is 145135619. The next prime is 145135643. The reversal of 145135625 is 526531541.

It can be written as a sum of positive squares in 5 ways, for example, as 71639296 + 73496329 = 8464^2 + 8573^2 .

It is not a de Polignac number, because 145135625 - 2⁴ = 145135609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145135591 and 145135600.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 115484 + ... + 116733.

Almost surely, 2^145135625 is an apocalyptic number.

It is an amenable number.

145135625 is a deficient number, since it is larger than the sum of its proper divisors (36226633).

145135625 is an frugal number, since it uses more digits than its factorization.

145135625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232237 (or 232222 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 145135625 is about 12047.2247841567. The cubic root of 145135625 is about 525.5225334149.

The spelling of 145135625 in words is "one hundred forty-five million, one hundred thirty-five thousand, six hundred twenty-five".