425747531377 has 4 divisors (see below), whose sum is σ = 486568607296. Its totient is φ = 364926455460.

The previous prime is 425747531351. The next prime is 425747531381. The reversal of 425747531377 is 773135747524.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 425747531377 - 2¹¹ = 425747529329 is a prime.

It is a super-2 number, since 2×425747531377² (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 (425747531977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30410537949 + ... + 30410537962.

It is an arithmetic number, because the mean of its divisors is an integer number (121642151824).

Almost surely, 2^425747531377 is an apocalyptic number.

It is an amenable number.

425747531377 is a deficient number, since it is larger than the sum of its proper divisors (60821075919).

425747531377 is an equidigital number, since it uses as much as digits as its factorization.

425747531377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60821075918.

The product of its digits is 17287200, while the sum is 55.

The spelling of 425747531377 in words is "four hundred twenty-five billion, seven hundred forty-seven million, five hundred thirty-one thousand, three hundred seventy-seven".