1240072225 has 48 divisors (see below), whose sum is σ = 1866630528. Its totient is φ = 797783040.

The previous prime is 1240072189. The next prime is 1240072241. The reversal of 1240072225 is 5222700421.

It is not a de Polignac number, because 1240072225 - 2¹⁹ = 1239547937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1240072225.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1555527 + ... + 1556323.

It is an arithmetic number, because the mean of its divisors is an integer number (38888136).

Almost surely, 2^1240072225 is an apocalyptic number.

It is an amenable number.

1240072225 is a deficient number, since it is larger than the sum of its proper divisors (626558303).

1240072225 is a wasteful number, since it uses less digits than its factorization.

1240072225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 1240072225 is about 35214.6592344722. The cubic root of 1240072225 is about 1074.3579291848.

Adding to 1240072225 its reverse (5222700421), we get a palindrome (6462772646).

The spelling of 1240072225 in words is "one billion, two hundred forty million, seventy-two thousand, two hundred twenty-five".