250420245421 has 4 divisors (see below), whose sum is σ = 250463584000. Its totient is φ = 250376906844.

The previous prime is 250420245409. The next prime is 250420245451. The reversal of 250420245421 is 124542024052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 250420245421 - 2⁵ = 250420245389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250420245451) 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, 21660621 + ... + 21672178.

It is an arithmetic number, because the mean of its divisors is an integer number (62615896000).

Almost surely, 2^250420245421 is an apocalyptic number.

It is an amenable number.

250420245421 is a deficient number, since it is larger than the sum of its proper divisors (43338579).

250420245421 is an equidigital number, since it uses as much as digits as its factorization.

250420245421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43338578.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 250420245421 its reverse (124542024052), we get a palindrome (374962269473).

The spelling of 250420245421 in words is "two hundred fifty billion, four hundred twenty million, two hundred forty-five thousand, four hundred twenty-one".