425042644 has 24 divisors (see below), whose sum is σ = 801932040. Its totient is φ = 195955584.

The previous prime is 425042621. The next prime is 425042663. The reversal of 425042644 is 446240524.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 113167044 + 311875600 = 10638^2 + 17660^2 .

It is a super-2 number, since 2×425042644² = 361322498437021472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48642 + ... + 56710.

It is an arithmetic number, because the mean of its divisors is an integer number (33413835).

Almost surely, 2^425042644 is an apocalyptic number.

It is an amenable number.

425042644 is a deficient number, since it is larger than the sum of its proper divisors (376889396).

425042644 is a wasteful number, since it uses less digits than its factorization.

425042644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9099 (or 9097 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 425042644 is about 20616.5623710647. The cubic root of 425042644 is about 751.8724437526.

The spelling of 425042644 in words is "four hundred twenty-five million, forty-two thousand, six hundred forty-four".