145325724 has 48 divisors (see below), whose sum is σ = 367411968. Its totient is φ = 44529408.

The previous prime is 145325717. The next prime is 145325731. The reversal of 145325724 is 427523541.

It is an interprime number because it is at equal distance from previous prime (145325717) and next prime (145325731).

It is a super-3 number, since 3×145325724³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489 + ... + 17055.

It is an arithmetic number, because the mean of its divisors is an integer number (7654416).

Almost surely, 2^145325724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145325724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183705984).

145325724 is an abundant number, since it is smaller than the sum of its proper divisors (222086244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145325724 is a wasteful number, since it uses less digits than its factorization.

145325724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16634 (or 16632 counting only the distinct ones).

The product of its digits is 33600, while the sum is 33.

The square root of 145325724 is about 12055.1119447312. Note that the first 3 decimals coincide. The cubic root of 145325724 is about 525.7518768832.

The spelling of 145325724 in words is "one hundred forty-five million, three hundred twenty-five thousand, seven hundred twenty-four".