425065440 has 48 divisors (see below), whose sum is σ = 1338957648. Its totient is φ = 113350656.

The previous prime is 425065439. The next prime is 425065457. The reversal of 425065440 is 44560524.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 425065398 and 425065407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442297 + ... + 443256.

It is an arithmetic number, because the mean of its divisors is an integer number (27894951).

Almost surely, 2^425065440 is an apocalyptic number.

425065440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

425065440 is an abundant number, since it is smaller than the sum of its proper divisors (913892208).

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

425065440 is a wasteful number, since it uses less digits than its factorization.

425065440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885571 (or 885563 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 425065440 is about 20617.1152201272. The cubic root of 425065440 is about 751.8858850532.

The spelling of 425065440 in words is "four hundred twenty-five million, sixty-five thousand, four hundred forty".