250020540 has 288 divisors, whose sum is σ = 988243200. Its totient is φ = 51891840.

The previous prime is 250020539. The next prime is 250020553. The reversal of 250020540 is 45020052.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 290631 + ... + 291489.

It is an arithmetic number, because the mean of its divisors is an integer number (3431400).

Almost surely, 2^250020540 is an apocalyptic number.

250020540 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 250020540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494121600).

250020540 is an abundant number, since it is smaller than the sum of its proper divisors (738222660).

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

250020540 is a wasteful number, since it uses less digits than its factorization.

250020540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 250020540 is about 15812.0378193325. The cubic root of 250020540 is about 629.9777769939.

Adding to 250020540 its reverse (45020052), we get a palindrome (295040592).

The spelling of 250020540 in words is "two hundred fifty million, twenty thousand, five hundred forty".