1240140525 has 24 divisors (see below), whose sum is σ = 2208087840. Its totient is φ = 610530240.

The previous prime is 1240140491. The next prime is 1240140563. The reversal of 1240140525 is 5250410421.

It is not a de Polignac number, because 1240140525 - 2¹⁰ = 1240139501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240140495 and 1240140504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 634995 + ... + 636944.

It is an arithmetic number, because the mean of its divisors is an integer number (92003660).

Almost surely, 2^1240140525 is an apocalyptic number.

1240140525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1240140525 is a deficient number, since it is larger than the sum of its proper divisors (967947315).

1240140525 is a wasteful number, since it uses less digits than its factorization.

1240140525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271965 (or 1271960 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1240140525 is about 35215.6289877094. The cubic root of 1240140525 is about 1074.3776531165.

Adding to 1240140525 its reverse (5250410421), we get a palindrome (6490550946).

The spelling of 1240140525 in words is "one billion, two hundred forty million, one hundred forty thousand, five hundred twenty-five".