425555064 has 72 divisors (see below), whose sum is σ = 1266872880. Its totient is φ = 128953440.

The previous prime is 425555059. The next prime is 425555071. The reversal of 425555064 is 460555524.

425555064 is a `hidden beast` number, since 42 + 5 + 5 + 550 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×425555064² = 362194224992088192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15712 + ... + 33135.

Almost surely, 2^425555064 is an apocalyptic number.

425555064 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

425555064 is an abundant number, since it is smaller than the sum of its proper divisors (841317816).

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

425555064 is a wasteful number, since it uses less digits than its factorization.

425555064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48881 (or 48863 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The square root of 425555064 is about 20628.9860148287. The cubic root of 425555064 is about 752.1744681582.

It can be divided in two parts, 4255 and 55064, that added together give a cube (59319 = 39³).

The spelling of 425555064 in words is "four hundred twenty-five million, five hundred fifty-five thousand, sixty-four".