250520741 has 4 divisors (see below), whose sum is σ = 250653612. Its totient is φ = 250387872.

The previous prime is 250520737. The next prime is 250520759. The reversal of 250520741 is 147025052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119990116 + 130530625 = 10954^2 + 11425^2 .

It is a cyclic number.

It is not a de Polignac number, because 250520741 - 2² = 250520737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 250520741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250520791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63566 + ... + 67391.

It is an arithmetic number, because the mean of its divisors is an integer number (62663403).

Almost surely, 2^250520741 is an apocalyptic number.

It is an amenable number.

250520741 is a deficient number, since it is larger than the sum of its proper divisors (132871).

250520741 is a wasteful number, since it uses less digits than its factorization.

250520741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132870.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 250520741 is about 15827.8470108856. The cubic root of 250520741 is about 630.3976166373.

Adding to 250520741 its reverse (147025052), we get a palindrome (397545793).

The spelling of 250520741 in words is "two hundred fifty million, five hundred twenty thousand, seven hundred forty-one".