1535225540 has 12 divisors (see below), whose sum is σ = 3223973676. Its totient is φ = 614090208.

The previous prime is 1535225513. The next prime is 1535225563. The reversal of 1535225540 is 455225351.

It can be written as a sum of positive squares in 2 ways, for example, as 441336064 + 1093889476 = 21008^2 + 33074^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1535225497 and 1535225506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38380619 + ... + 38380658.

It is an arithmetic number, because the mean of its divisors is an integer number (268664473).

Almost surely, 2^1535225540 is an apocalyptic number.

1535225540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1535225540 is an abundant number, since it is smaller than the sum of its proper divisors (1688748136).

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

1535225540 is a wasteful number, since it uses less digits than its factorization.

1535225540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76761286 (or 76761284 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 1535225540 is about 39181.9542646867. The cubic root of 1535225540 is about 1153.6057061797.

The spelling of 1535225540 in words is "one billion, five hundred thirty-five million, two hundred twenty-five thousand, five hundred forty".