145331525 has 12 divisors (see below), whose sum is σ = 181071744. Its totient is φ = 115710000.

The previous prime is 145331507. The next prime is 145331569. The reversal of 145331525 is 525133541.

It is not a de Polignac number, because 145331525 - 2¹⁴ = 145315141 is a prime.

It is a super-2 number, since 2×145331525² = 42242504317651250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8501 + ... + 19050.

It is an arithmetic number, because the mean of its divisors is an integer number (15089312).

Almost surely, 2^145331525 is an apocalyptic number.

It is an amenable number.

145331525 is a deficient number, since it is larger than the sum of its proper divisors (35740219).

145331525 is a wasteful number, since it uses less digits than its factorization.

145331525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27772 (or 27767 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 145331525 is about 12055.3525456537. The cubic root of 145331525 is about 525.7588723092.

The spelling of 145331525 in words is "one hundred forty-five million, three hundred thirty-one thousand, five hundred twenty-five".