251201050422 has 32 divisors (see below), whose sum is σ = 574189654272. Its totient is φ = 71769750624.

The previous prime is 251201050411. The next prime is 251201050489. The reversal of 251201050422 is 224050102152.

It is a junction number, because it is equal to n+sod(n) for n = 251201050392 and 251201050401.

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, 2209308 + ... + 2320224.

It is an arithmetic number, because the mean of its divisors is an integer number (17943426696).

Almost surely, 2^251201050422 is an apocalyptic number.

251201050422 is an abundant number, since it is smaller than the sum of its proper divisors (322988603850).

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

251201050422 is a wasteful number, since it uses less digits than its factorization.

251201050422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164852.

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 251201050422 its reverse (224050102152), we get a palindrome (475251152574).

The spelling of 251201050422 in words is "two hundred fifty-one billion, two hundred one million, fifty thousand, four hundred twenty-two".