1252543544 has 32 divisors (see below), whose sum is σ = 2841907680. Its totient is φ = 505227264.

The previous prime is 1252543543. The next prime is 1252543571. The reversal of 1252543544 is 4453452521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252543543) 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, 656897 + ... + 658800.

It is an arithmetic number, because the mean of its divisors is an integer number (88809615).

Almost surely, 2^1252543544 is an apocalyptic number.

1252543544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1252543544 is an abundant number, since it is smaller than the sum of its proper divisors (1589364136).

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

1252543544 is a wasteful number, since it uses less digits than its factorization.

1252543544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315727 (or 1315723 counting only the distinct ones).

The product of its digits is 96000, while the sum is 35.

The square root of 1252543544 is about 35391.2919232966. The cubic root of 1252543544 is about 1077.9475032463.

The spelling of 1252543544 in words is "one billion, two hundred fifty-two million, five hundred forty-three thousand, five hundred forty-four".