145312725 has 24 divisors (see below), whose sum is σ = 240609600. Its totient is φ = 77384320.

The previous prime is 145312723. The next prime is 145312729. The reversal of 145312725 is 527213541.

145312725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145312725 - 2¹ = 145312723 is a prime.

It is a super-2 number, since 2×145312725² = 42231576093851250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145312692 and 145312701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145312721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77752 + ... + 79598.

It is an arithmetic number, because the mean of its divisors is an integer number (10025400).

Almost surely, 2^145312725 is an apocalyptic number.

145312725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145312725 is a deficient number, since it is larger than the sum of its proper divisors (95296875).

145312725 is a wasteful number, since it uses less digits than its factorization.

145312725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909 (or 2904 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 145312725 is about 12054.5727838028. The cubic root of 145312725 is about 525.7362007128.

The spelling of 145312725 in words is "one hundred forty-five million, three hundred twelve thousand, seven hundred twenty-five".