425544220531 has 4 divisors (see below), whose sum is σ = 440218159200. Its totient is φ = 410870281864.

The previous prime is 425544220529. The next prime is 425544220547. The reversal of 425544220531 is 135022445524.

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

It is a cyclic number.

It is not a de Polignac number, because 425544220531 - 2¹ = 425544220529 is a prime.

It is a super-2 number, since 2×425544220531² (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 (425544250531) 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, 7336969291 + ... + 7336969348.

It is an arithmetic number, because the mean of its divisors is an integer number (110054539800).

Almost surely, 2^425544220531 is an apocalyptic number.

425544220531 is a deficient number, since it is larger than the sum of its proper divisors (14673938669).

425544220531 is a wasteful number, since it uses less digits than its factorization.

425544220531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14673938668.

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 425544220531 in words is "four hundred twenty-five billion, five hundred forty-four million, two hundred twenty thousand, five hundred thirty-one".