1252415040 has 56 divisors (see below), whose sum is σ = 3976420800. Its totient is φ = 333977088.

The previous prime is 1252415009. The next prime is 1252415071. The reversal of 1252415040 is 405142521.

It is an interprime number because it is at equal distance from previous prime (1252415009) and next prime (1252415071).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1252415040.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651340 + ... + 653259.

Almost surely, 2^1252415040 is an apocalyptic number.

1252415040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252415040 is an abundant number, since it is smaller than the sum of its proper divisors (2724005760).

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

1252415040 is a wasteful number, since it uses less digits than its factorization.

1252415040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304619 (or 1304609 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1252415040 is about 35389.4764018910. The cubic root of 1252415040 is about 1077.9106381798.

Adding to 1252415040 its reverse (405142521), we get a palindrome (1657557561).

The spelling of 1252415040 in words is "one billion, two hundred fifty-two million, four hundred fifteen thousand, forty".