425981033881 has 4 divisors (see below), whose sum is σ = 458748805732. Its totient is φ = 393213262032.

The previous prime is 425981033851. The next prime is 425981033903. The reversal of 425981033881 is 188330189524.

It is a happy number.

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 108251528256 + 317729505625 = 329016^2 + 563675^2 .

It is a cyclic number.

It is not a de Polignac number, because 425981033881 - 2¹³ = 425981025689 is a prime.

It is a super-2 number, since 2×425981033881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425981033851) 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, 16383885906 + ... + 16383885931.

It is an arithmetic number, because the mean of its divisors is an integer number (114687201433).

Almost surely, 2^425981033881 is an apocalyptic number.

It is an amenable number.

425981033881 is a deficient number, since it is larger than the sum of its proper divisors (32767771851).

425981033881 is a wasteful number, since it uses less digits than its factorization.

425981033881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32767771850.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 425981033881 in words is "four hundred twenty-five billion, nine hundred eighty-one million, thirty-three thousand, eight hundred eighty-one".