425771420 has 12 divisors (see below), whose sum is σ = 894120024. Its totient is φ = 170308560.

The previous prime is 425771407. The next prime is 425771471. The reversal of 425771420 is 24177524.

Added to its reverse (24177524) it gives a square (449948944 = 21212²).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10644266 + ... + 10644305.

It is an arithmetic number, because the mean of its divisors is an integer number (74510002).

Almost surely, 2^425771420 is an apocalyptic number.

It is an amenable number.

425771420 is an abundant number, since it is smaller than the sum of its proper divisors (468348604).

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

425771420 is a wasteful number, since it uses less digits than its factorization.

425771420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21288580 (or 21288578 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 425771420 is about 20634.2293289573. The cubic root of 425771420 is about 752.3019173038.

Adding to 425771420 its reverse (24177524), we get a square (449948944 = 21212²).

The spelling of 425771420 in words is "four hundred twenty-five million, seven hundred seventy-one thousand, four hundred twenty".