1252556340 has 48 divisors (see below), whose sum is σ = 4008181632. Its totient is φ = 286298496.

The previous prime is 1252556299. The next prime is 1252556351. The reversal of 1252556340 is 436552521.

It is a congruent number.

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, 1490719 + ... + 1491558.

It is an arithmetic number, because the mean of its divisors is an integer number (83503784).

Almost surely, 2^1252556340 is an apocalyptic number.

1252556340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252556340 is an abundant number, since it is smaller than the sum of its proper divisors (2755625292).

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

1252556340 is a wasteful number, since it uses less digits than its factorization.

1252556340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982296 (or 2982294 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 1252556340 is about 35391.4727017681. The cubic root of 1252556340 is about 1077.9511740087.

The spelling of 1252556340 in words is "one billion, two hundred fifty-two million, five hundred fifty-six thousand, three hundred forty".