20250401263 has 4 divisors (see below), whose sum is σ = 20252578048. Its totient is φ = 20248224480.

The previous prime is 20250401243. The next prime is 20250401273. The reversal of 20250401263 is 36210405202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36210405202 = 2 ⋅18105202601.

It is a cyclic number.

It is not a de Polignac number, because 20250401263 - 2¹³ = 20250393071 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 (20250401203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074378 + ... + 1093063.

It is an arithmetic number, because the mean of its divisors is an integer number (5063144512).

Almost surely, 2^20250401263 is an apocalyptic number.

20250401263 is a deficient number, since it is larger than the sum of its proper divisors (2176785).

20250401263 is an equidigital number, since it uses as much as digits as its factorization.

20250401263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176784.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20250401263 its reverse (36210405202), we get a palindrome (56460806465).

The spelling of 20250401263 in words is "twenty billion, two hundred fifty million, four hundred one thousand, two hundred sixty-three".