1425405240 has 96 divisors (see below), whose sum is σ = 5294371680. Its totient is φ = 325806336.

The previous prime is 1425405211. The next prime is 1425405259. The reversal of 1425405240 is 425045241.

1425405240 is a `hidden beast` number, since 14 + 2 + 5 + 405 + 240 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 280299 + ... + 285338.

It is an arithmetic number, because the mean of its divisors is an integer number (55149705).

Almost surely, 2^1425405240 is an apocalyptic number.

1425405240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1425405240 is an abundant number, since it is smaller than the sum of its proper divisors (3868966440).

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

1425405240 is a wasteful number, since it uses less digits than its factorization.

1425405240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565661 (or 565654 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1425405240 is about 37754.5393297283. The cubic root of 1425405240 is about 1125.4152185828.

The spelling of 1425405240 in words is "one billion, four hundred twenty-five million, four hundred five thousand, two hundred forty".