145744725 has 72 divisors (see below), whose sum is σ = 291023040. Its totient is φ = 63037440.

The previous prime is 145744699. The next prime is 145744777. The reversal of 145744725 is 527447541.

It is not a de Polignac number, because 145744725 - 2⁶ = 145744661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 189141 + ... + 189909.

Almost surely, 2^145744725 is an apocalyptic number.

145744725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145744725 is a deficient number, since it is larger than the sum of its proper divisors (145278315).

145744725 is a wasteful number, since it uses less digits than its factorization.

145744725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 803 counting only the distinct ones).

The product of its digits is 156800, while the sum is 39.

The square root of 145744725 is about 12072.4779974950. The cubic root of 145744725 is about 526.2566720925.

The spelling of 145744725 in words is "one hundred forty-five million, seven hundred forty-four thousand, seven hundred twenty-five".