250042520 has 128 divisors (see below), whose sum is σ = 702656640. Its totient is φ = 77967360.

The previous prime is 250042483. The next prime is 250042537. The reversal of 250042520 is 25240052.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 250042492 and 250042501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265250 + ... + 266190.

It is an arithmetic number, because the mean of its divisors is an integer number (5489505).

Almost surely, 2^250042520 is an apocalyptic number.

250042520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250042520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351328320).

250042520 is an abundant number, since it is smaller than the sum of its proper divisors (452614120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

250042520 is a wasteful number, since it uses less digits than its factorization.

250042520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045 (or 1041 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 250042520 is about 15812.7328441355. The cubic root of 250042520 is about 629.9962374849.

Adding to 250042520 its reverse (25240052), we get a palindrome (275282572).

The spelling of 250042520 in words is "two hundred fifty million, forty-two thousand, five hundred twenty".