1542635225 has 12 divisors (see below), whose sum is σ = 1948961196. Its totient is φ = 1210822080.

The previous prime is 1542635221. The next prime is 1542635239. The reversal of 1542635225 is 5225362451.

It can be written as a sum of positive squares in 6 ways, for example, as 39677401 + 1502957824 = 6299^2 + 38768^2 .

It is not a de Polignac number, because 1542635225 - 2² = 1542635221 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1542635221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 580802 + ... + 583451.

It is an arithmetic number, because the mean of its divisors is an integer number (162413433).

Almost surely, 2^1542635225 is an apocalyptic number.

It is an amenable number.

1542635225 is a deficient number, since it is larger than the sum of its proper divisors (406325971).

1542635225 is a wasteful number, since it uses less digits than its factorization.

1542635225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164316 (or 1164311 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 1542635225 is about 39276.3952648407. The cubic root of 1542635225 is about 1155.4586673043.

Adding to 1542635225 its reverse (5225362451), we get a palindrome (6767997676).

The spelling of 1542635225 in words is "one billion, five hundred forty-two million, six hundred thirty-five thousand, two hundred twenty-five".