145252525 has 12 divisors (see below), whose sum is σ = 196487424. Its totient is φ = 105638000.

The previous prime is 145252517. The next prime is 145252537. The reversal of 145252525 is 525252541.

It is a happy number.

It is not a de Polignac number, because 145252525 - 2³ = 145252517 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263821 + ... + 264370.

It is an arithmetic number, because the mean of its divisors is an integer number (16373952).

Almost surely, 2^145252525 is an apocalyptic number.

It is an amenable number.

145252525 is a deficient number, since it is larger than the sum of its proper divisors (51234899).

145252525 is a wasteful number, since it uses less digits than its factorization.

145252525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528212 (or 528207 counting only the distinct ones).

The product of its digits is 20000, while the sum is 31.

The square root of 145252525 is about 12052.0755473902. The cubic root of 145252525 is about 525.6635902082.

The spelling of 145252525 in words is "one hundred forty-five million, two hundred fifty-two thousand, five hundred twenty-five".