1252613537 has 8 divisors (see below), whose sum is σ = 1431889536. Its totient is φ = 1073420352.

The previous prime is 1252613519. The next prime is 1252613569. The reversal of 1252613537 is 7353162521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252613537 - 2⁶ = 1252613473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1252613497 and 1252613506.

It is not an unprimeable number, because it can be changed into a prime (1252613587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16073 + ... + 52569.

It is an arithmetic number, because the mean of its divisors is an integer number (178986192).

Almost surely, 2^1252613537 is an apocalyptic number.

It is an amenable number.

1252613537 is a deficient number, since it is larger than the sum of its proper divisors (179275999).

1252613537 is an equidigital number, since it uses as much as digits as its factorization.

1252613537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41407.

The product of its digits is 37800, while the sum is 35.

The square root of 1252613537 is about 35392.2807544244. The cubic root of 1252613537 is about 1077.9675816898.

The spelling of 1252613537 in words is "one billion, two hundred fifty-two million, six hundred thirteen thousand, five hundred thirty-seven".