251023020235 has 24 divisors (see below), whose sum is σ = 337429059120. Its totient is φ = 178978730112.

The previous prime is 251023020229. The next prime is 251023020329. The reversal of 251023020235 is 532020320152.

It is not a de Polignac number, because 251023020235 - 2⁷ = 251023020107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5097369 + ... + 5146378.

It is an arithmetic number, because the mean of its divisors is an integer number (14059544130).

Almost surely, 2^251023020235 is an apocalyptic number.

251023020235 is a deficient number, since it is larger than the sum of its proper divisors (86406038885).

251023020235 is a wasteful number, since it uses less digits than its factorization.

251023020235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10243807 (or 10243794 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 251023020235 its reverse (532020320152), we get a palindrome (783043340387).

The spelling of 251023020235 in words is "two hundred fifty-one billion, twenty-three million, twenty thousand, two hundred thirty-five".