425424844516 has 27 divisors (see below), whose sum is σ = 866062022889. Its totient is φ = 182321019888.

The previous prime is 425424844489. The next prime is 425424844517. The reversal of 425424844516 is 615448424524.

It is a happy number.

The square root of 425424844516 is 652246.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 24634558116 + 400790286400 = 156954^2 + 633080^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 425424844516.

It is not an unprimeable number, because it can be changed into a prime (425424844517) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9108150 + ... + 9154738.

Almost surely, 2^425424844516 is an apocalyptic number.

425424844516 is the 652246-th square number.

It is an amenable number.

425424844516 is an abundant number, since it is smaller than the sum of its proper divisors (440637178373).

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

425424844516 is an frugal number, since it uses more digits than its factorization.

425424844516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93196 (or 46598 counting only the distinct ones).

The product of its digits is 4915200, while the sum is 49.

Multiplying 425424844516 by its sum of digits (49), we get a square (20845817381284 = 4565722²).

425424844516 divided by its sum of digits (49) gives a square (8682139684 = 93178²).

The spelling of 425424844516 in words is "four hundred twenty-five billion, four hundred twenty-four million, eight hundred forty-four thousand, five hundred sixteen".