1252866536 has 32 divisors (see below), whose sum is σ = 2479334400. Its totient is φ = 591886080.

The previous prime is 1252866529. The next prime is 1252866539. The reversal of 1252866536 is 6356682521.

It is not an unprimeable number, because it can be changed into a prime (1252866539) 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, 47456 + ... + 68976.

It is an arithmetic number, because the mean of its divisors is an integer number (77479200).

Almost surely, 2^1252866536 is an apocalyptic number.

It is an amenable number.

1252866536 is a deficient number, since it is larger than the sum of its proper divisors (1226467864).

1252866536 is a wasteful number, since it uses less digits than its factorization.

1252866536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21929 (or 21925 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 1252866536 is about 35395.8547855536. The cubic root of 1252866536 is about 1078.0401516546.

The spelling of 1252866536 in words is "one billion, two hundred fifty-two million, eight hundred sixty-six thousand, five hundred thirty-six".