1242242352525 has 24 divisors (see below), whose sum is σ = 2053883525184. Its totient is φ = 662515436800.

The previous prime is 1242242352523. The next prime is 1242242352551. The reversal of 1242242352525 is 5252532422421.

It is not a de Polignac number, because 1242242352525 - 2¹ = 1242242352523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242242352523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4170565 + ... + 4458485.

It is an arithmetic number, because the mean of its divisors is an integer number (85578480216).

Almost surely, 2^{1242242352525} is an apocalyptic number.

1242242352525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1242242352525 is a deficient number, since it is larger than the sum of its proper divisors (811641172659).

1242242352525 is a wasteful number, since it uses less digits than its factorization.

1242242352525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345461 (or 345456 counting only the distinct ones).

The product of its digits is 384000, while the sum is 39.

Adding to 1242242352525 its reverse (5252532422421), we get a palindrome (6494774774946).

The spelling of 1242242352525 in words is "one trillion, two hundred forty-two billion, two hundred forty-two million, three hundred fifty-two thousand, five hundred twenty-five".