250385402740 has 48 divisors (see below), whose sum is σ = 574707228480. Its totient is φ = 90875105280.

The previous prime is 250385402699. The next prime is 250385402747. The reversal of 250385402740 is 47204583052.

It is a junction number, because it is equal to n+sod(n) for n = 250385402693 and 250385402702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250385402747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973005 + ... + 1203124.

It is an arithmetic number, because the mean of its divisors is an integer number (11973067260).

Almost surely, 2^250385402740 is an apocalyptic number.

250385402740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250385402740 is an abundant number, since it is smaller than the sum of its proper divisors (324321825740).

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

250385402740 is a wasteful number, since it uses less digits than its factorization.

250385402740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176672 (or 2176670 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 40.

Adding to 250385402740 its reverse (47204583052), we get a palindrome (297589985792).

The spelling of 250385402740 in words is "two hundred fifty billion, three hundred eighty-five million, four hundred two thousand, seven hundred forty".