425256540 has 96 divisors (see below), whose sum is σ = 1229813760. Its totient is φ = 109714176.

The previous prime is 425256539. The next prime is 425256563. The reversal of 425256540 is 45652524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 494631 + ... + 495489.

It is an arithmetic number, because the mean of its divisors is an integer number (12810560).

Almost surely, 2^425256540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425256540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614906880).

425256540 is an abundant number, since it is smaller than the sum of its proper divisors (804557220).

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

425256540 is a wasteful number, since it uses less digits than its factorization.

425256540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 425256540 is about 20621.7491983585. The cubic root of 425256540 is about 751.9985452477.

The spelling of 425256540 in words is "four hundred twenty-five million, two hundred fifty-six thousand, five hundred forty".