425440628874 has 96 divisors (see below), whose sum is σ = 1001980761600. Its totient is φ = 129966819840.

The previous prime is 425440628867. The next prime is 425440628887. The reversal of 425440628874 is 478826044524.

It is a happy number.

425440628874 is a `hidden beast` number, since 4 + 2 + 5 + 4 + 4 + 0 + 628 + 8 + 7 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 425440628874.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 36390822 + ... + 36402510.

It is an arithmetic number, because the mean of its divisors is an integer number (10437299600).

Almost surely, 2^425440628874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425440628874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500990380800).

425440628874 is an abundant number, since it is smaller than the sum of its proper divisors (576540132726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425440628874 is a wasteful number, since it uses less digits than its factorization.

425440628874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15180 (or 15177 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 54.

The spelling of 425440628874 in words is "four hundred twenty-five billion, four hundred forty million, six hundred twenty-eight thousand, eight hundred seventy-four".