1252136536 has 32 divisors (see below), whose sum is σ = 2755671840. Its totient is φ = 522125568.

The previous prime is 1252136533. The next prime is 1252136579. The reversal of 1252136536 is 6356312521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252136533) 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, 300085 + ... + 304228.

It is an arithmetic number, because the mean of its divisors is an integer number (86114745).

Almost surely, 2^1252136536 is an apocalyptic number.

It is an amenable number.

1252136536 is an abundant number, since it is smaller than the sum of its proper divisors (1503535304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252136536 is a wasteful number, since it uses less digits than its factorization.

1252136536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604363 (or 604359 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 1252136536 is about 35385.5413410619. The cubic root of 1252136536 is about 1077.8307326453.

The spelling of 1252136536 in words is "one billion, two hundred fifty-two million, one hundred thirty-six thousand, five hundred thirty-six".