525040145 has 24 divisors (see below), whose sum is σ = 740502504. Its totient is φ = 356299776.

The previous prime is 525040141. The next prime is 525040147. The reversal of 525040145 is 541040525.

It can be written as a sum of positive squares in 4 ways, for example, as 138956944 + 386083201 = 11788^2 + 19649^2 .

It is not a de Polignac number, because 525040145 - 2² = 525040141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (525040141) 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, 12719 + ... + 34811.

It is an arithmetic number, because the mean of its divisors is an integer number (30854271).

Almost surely, 2^525040145 is an apocalyptic number.

It is an amenable number.

525040145 is a deficient number, since it is larger than the sum of its proper divisors (215462359).

525040145 is a wasteful number, since it uses less digits than its factorization.

525040145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22209 (or 22202 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 525040145 is about 22913.7544937533. The cubic root of 525040145 is about 806.7348847399.

The spelling of 525040145 in words is "five hundred twenty-five million, forty thousand, one hundred forty-five".