145497252825 has 36 divisors (see below), whose sum is σ = 260623274028. Its totient is φ = 77592124800.

The previous prime is 145497252781. The next prime is 145497252841. The reversal of 145497252825 is 528252794541.

145497252825 is a `hidden beast` number, since 1 + 4 + 5 + 4 + 97 + 2 + 528 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 25190361 + 145472062464 = 5019^2 + 381408^2 .

It is not a de Polignac number, because 145497252825 - 2²² = 145493058521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4154287 + ... + 4189163.

Almost surely, 2^145497252825 is an apocalyptic number.

145497252825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145497252825 is a deficient number, since it is larger than the sum of its proper divisors (115126021203).

145497252825 is a wasteful number, since it uses less digits than its factorization.

145497252825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53434 (or 53426 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 54.

The spelling of 145497252825 in words is "one hundred forty-five billion, four hundred ninety-seven million, two hundred fifty-two thousand, eight hundred twenty-five".