251003245111220 has 48 divisors (see below), whose sum is σ = 623180470631040. Its totient is φ = 83090729414784.

The previous prime is 251003245111211. The next prime is 251003245111231. The reversal of 251003245111220 is 22111542300152.

251003245111220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30911725634 + ... + 30911733753.

It is an arithmetic number, because the mean of its divisors is an integer number (12982926471480).

Almost surely, 2^{251003245111220} is an apocalyptic number.

251003245111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251003245111220 is an abundant number, since it is smaller than the sum of its proper divisors (372177225519820).

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

251003245111220 is a wasteful number, since it uses less digits than its factorization.

251003245111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61823459432 (or 61823459430 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 251003245111220 its reverse (22111542300152), we get a palindrome (273114787411372).

The spelling of 251003245111220 in words is "two hundred fifty-one trillion, three billion, two hundred forty-five million, one hundred eleven thousand, two hundred twenty".