145732725 has 36 divisors (see below), whose sum is σ = 261672736. Its totient is φ = 77531040.

The previous prime is 145732723. The next prime is 145732733. The reversal of 145732725 is 527237541.

145732725 is a `hidden beast` number, since 14 + 573 + 2 + 72 + 5 = 666.

It is not a de Polignac number, because 145732725 - 2¹ = 145732723 is a prime.

It is a Duffinian number.

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 145732725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145732723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 176664 + ... + 177486.

Almost surely, 2^145732725 is an apocalyptic number.

145732725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145732725 is a deficient number, since it is larger than the sum of its proper divisors (115940011).

145732725 is a wasteful number, since it uses less digits than its factorization.

145732725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 1618 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 145732725 is about 12071.9809890506. The cubic root of 145732725 is about 526.2422284516.

The spelling of 145732725 in words is "one hundred forty-five million, seven hundred thirty-two thousand, seven hundred twenty-five".