425042004781 has 4 divisors (see below), whose sum is σ = 429250341564. Its totient is φ = 420833668000.

The previous prime is 425042004769. The next prime is 425042004851. The reversal of 425042004781 is 187400240524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 333236034756 + 91805970025 = 577266^2 + 302995^2 .

It is a cyclic number.

It is not a de Polignac number, because 425042004781 - 2³³ = 416452070189 is a prime.

It is a super-2 number, since 2×425042004781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 425042004781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425042004731) 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, 2104168240 + ... + 2104168441.

It is an arithmetic number, because the mean of its divisors is an integer number (107312585391).

Almost surely, 2^425042004781 is an apocalyptic number.

It is an amenable number.

425042004781 is a deficient number, since it is larger than the sum of its proper divisors (4208336783).

425042004781 is a wasteful number, since it uses less digits than its factorization.

425042004781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208336782.

The product of its (nonzero) digits is 71680, while the sum is 37.

The spelling of 425042004781 in words is "four hundred twenty-five billion, forty-two million, four thousand, seven hundred eighty-one".