1252502440 has 64 divisors (see below), whose sum is σ = 3299304960. Its totient is φ = 418951680.

The previous prime is 1252502437. The next prime is 1252502473. The reversal of 1252502440 is 442052521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43072 + ... + 66031.

It is an arithmetic number, because the mean of its divisors is an integer number (51551640).

Almost surely, 2^1252502440 is an apocalyptic number.

1252502440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252502440 is an abundant number, since it is smaller than the sum of its proper divisors (2046802520).

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

1252502440 is a wasteful number, since it uses less digits than its factorization.

1252502440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109162 (or 109158 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1252502440 is about 35390.7112107118. The cubic root of 1252502440 is about 1077.9357116566.

Adding to 1252502440 its reverse (442052521), we get a palindrome (1694554961).

The spelling of 1252502440 in words is "one billion, two hundred fifty-two million, five hundred two thousand, four hundred forty".