1425205540 has 48 divisors (see below), whose sum is σ = 3457085184. Its totient is φ = 487769600.

The previous prime is 1425205477. The next prime is 1425205543. The reversal of 1425205540 is 455025241.

It is a junction number, because it is equal to n+sod(n) for n = 1425205499 and 1425205508.

It is not an unprimeable number, because it can be changed into a prime (1425205543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186796 + ... + 194275.

It is an arithmetic number, because the mean of its divisors is an integer number (72022608).

Almost surely, 2^1425205540 is an apocalyptic number.

1425205540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1425205540 is an abundant number, since it is smaller than the sum of its proper divisors (2031879644).

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

1425205540 is a wasteful number, since it uses less digits than its factorization.

1425205540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381108 (or 381106 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1425205540 is about 37751.8945219972. The cubic root of 1425205540 is about 1125.3626590464.

The spelling of 1425205540 in words is "one billion, four hundred twenty-five million, two hundred five thousand, five hundred forty".