1252637525 has 12 divisors (see below), whose sum is σ = 1561953600. Its totient is φ = 996508080.

The previous prime is 1252637521. The next prime is 1252637527. The reversal of 1252637525 is 5257362521.

It is not a de Polignac number, because 1252637525 - 2² = 1252637521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252637521) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 135485 + ... + 144434.

It is an arithmetic number, because the mean of its divisors is an integer number (130162800).

Almost surely, 2^1252637525 is an apocalyptic number.

It is an amenable number.

1252637525 is a deficient number, since it is larger than the sum of its proper divisors (309316075).

1252637525 is a wasteful number, since it uses less digits than its factorization.

1252637525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280108 (or 280103 counting only the distinct ones).

The product of its digits is 126000, while the sum is 38.

The square root of 1252637525 is about 35392.6196402583. The cubic root of 1252637525 is about 1077.9744628016.

The spelling of 1252637525 in words is "one billion, two hundred fifty-two million, six hundred thirty-seven thousand, five hundred twenty-five".