1252503440 has 40 divisors (see below), whose sum is σ = 2920527360. Its totient is φ = 499546496.

The previous prime is 1252503419. The next prime is 1252503443. The reversal of 1252503440 is 443052521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1252503443) 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, 5201 + ... + 50319.

It is an arithmetic number, because the mean of its divisors is an integer number (73013184).

Almost surely, 2^1252503440 is an apocalyptic number.

1252503440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252503440 is an abundant number, since it is smaller than the sum of its proper divisors (1668023920).

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

1252503440 is a wasteful number, since it uses less digits than its factorization.

1252503440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45479 (or 45473 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1252503440 is about 35390.7253387099. The cubic root of 1252503440 is about 1077.9359985317.

Adding to 1252503440 its reverse (443052521), we get a palindrome (1695555961).

The spelling of 1252503440 in words is "one billion, two hundred fifty-two million, five hundred three thousand, four hundred forty".