145240625 has 12 divisors (see below), whose sum is σ = 181543068. Its totient is φ = 116190000.

The previous prime is 145240619. The next prime is 145240637. The reversal of 145240625 is 526042541.

It can be written as a sum of positive squares in 6 ways, for example, as 133102369 + 12138256 = 11537^2 + 3484^2 .

It is not a de Polignac number, because 145240625 - 2¹² = 145236529 is a prime.

It is a Duffinian 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, 20114 + ... + 26363.

It is an arithmetic number, because the mean of its divisors is an integer number (15128589).

Almost surely, 2^145240625 is an apocalyptic number.

It is an amenable number.

145240625 is a deficient number, since it is larger than the sum of its proper divisors (36302443).

145240625 is an frugal number, since it uses more digits than its factorization.

145240625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46502 (or 46482 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 145240625 is about 12051.5818463802. The cubic root of 145240625 is about 525.6492345942.

The spelling of 145240625 in words is "one hundred forty-five million, two hundred forty thousand, six hundred twenty-five".