50201025251 has 4 divisors (see below), whose sum is σ = 54062642592. Its totient is φ = 46339407912.

The previous prime is 50201025191. The next prime is 50201025307. The reversal of 50201025251 is 15252010205.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50201025251 is a prime.

It is a super-2 number, since 2×50201025251² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50201025151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1930808651 + ... + 1930808676.

It is an arithmetic number, because the mean of its divisors is an integer number (13515660648).

Almost surely, 2^50201025251 is an apocalyptic number.

50201025251 is a deficient number, since it is larger than the sum of its proper divisors (3861617341).

50201025251 is a wasteful number, since it uses less digits than its factorization.

50201025251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861617340.

The product of its (nonzero) digits is 1000, while the sum is 23.

Adding to 50201025251 its reverse (15252010205), we get a palindrome (65453035456).

The spelling of 50201025251 in words is "fifty billion, two hundred one million, twenty-five thousand, two hundred fifty-one".