1244242525 has 24 divisors (see below), whose sum is σ = 1557043200. Its totient is φ = 986293440.

The previous prime is 1244242513. The next prime is 1244242541. The reversal of 1244242525 is 5252424421.

It is not a de Polignac number, because 1244242525 - 2¹³ = 1244234333 is a prime.

It is a super-2 number, since 2×1244242525² = 3096278922036751250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1905099 + ... + 1905751.

It is an arithmetic number, because the mean of its divisors is an integer number (64876800).

Almost surely, 2^1244242525 is an apocalyptic number.

It is an amenable number.

1244242525 is a deficient number, since it is larger than the sum of its proper divisors (312800675).

1244242525 is a wasteful number, since it uses less digits than its factorization.

1244242525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1240 counting only the distinct ones).

The product of its digits is 25600, while the sum is 31.

The square root of 1244242525 is about 35273.8220923109. The cubic root of 1244242525 is about 1075.5609187358.

Adding to 1244242525 its reverse (5252424421), we get a palindrome (6496666946).

The spelling of 1244242525 in words is "one billion, two hundred forty-four million, two hundred forty-two thousand, five hundred twenty-five".