425250434021 has 24 divisors (see below), whose sum is σ = 521593039296. Its totient is φ = 339522324480.

The previous prime is 425250434009. The next prime is 425250434039. The reversal of 425250434021 is 120434052524.

It is not a de Polignac number, because 425250434021 - 2¹⁸ = 425250171877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425250434821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 887315 + ... + 1279776.

It is an arithmetic number, because the mean of its divisors is an integer number (21733043304).

Almost surely, 2^425250434021 is an apocalyptic number.

It is an amenable number.

425250434021 is a deficient number, since it is larger than the sum of its proper divisors (96342605275).

425250434021 is a wasteful number, since it uses less digits than its factorization.

425250434021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167229 (or 2167212 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 425250434021 its reverse (120434052524), we get a palindrome (545684486545).

The spelling of 425250434021 in words is "four hundred twenty-five billion, two hundred fifty million, four hundred thirty-four thousand, twenty-one".