425031503021 has 4 divisors (see below), whose sum is σ = 425032906044. Its totient is φ = 425030100000.

The previous prime is 425031503009. The next prime is 425031503063. The reversal of 425031503021 is 120305130524.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 373327110025 + 51704392996 = 611005^2 + 227386^2 .

It is a cyclic number.

It is not a de Polignac number, because 425031503021 - 2³⁸ = 150153596077 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 (425030503021) 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, 37760 + ... + 922761.

It is an arithmetic number, because the mean of its divisors is an integer number (106258226511).

Almost surely, 2^425031503021 is an apocalyptic number.

It is an amenable number.

425031503021 is a deficient number, since it is larger than the sum of its proper divisors (1403023).

425031503021 is an equidigital number, since it uses as much as digits as its factorization.

425031503021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403022.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 425031503021 its reverse (120305130524), we get a palindrome (545336633545).

The spelling of 425031503021 in words is "four hundred twenty-five billion, thirty-one million, five hundred three thousand, twenty-one".