425820852 has 18 divisors (see below), whose sum is σ = 1076380578. Its totient is φ = 141940272.

The previous prime is 425820841. The next prime is 425820853. The reversal of 425820852 is 258028524.

It can be written as a sum of positive squares in only one way, i.e., 413959716 + 11861136 = 20346^2 + 3444^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11828357 = 425820852 / (4 + 2 + 5 + 8 + 2 + 0 + 8 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425820853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5914143 + ... + 5914214.

It is an arithmetic number, because the mean of its divisors is an integer number (59798921).

Almost surely, 2^425820852 is an apocalyptic number.

It is an amenable number.

425820852 is an abundant number, since it is smaller than the sum of its proper divisors (650559726).

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

425820852 is a wasteful number, since it uses less digits than its factorization.

425820852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11828367 (or 11828362 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 425820852 is about 20635.4271097063. The cubic root of 425820852 is about 752.3310302249.

The spelling of 425820852 in words is "four hundred twenty-five million, eight hundred twenty thousand, eight hundred fifty-two".