1252409854 has 8 divisors (see below), whose sum is σ = 1878808320. Its totient is φ = 626140416.

The previous prime is 1252409843. The next prime is 1252409927. The reversal of 1252409854 is 4589042521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2499 + ... + 50110.

It is an arithmetic number, because the mean of its divisors is an integer number (234851040).

Almost surely, 2^1252409854 is an apocalyptic number.

1252409854 is a deficient number, since it is larger than the sum of its proper divisors (626398466).

1252409854 is a wasteful number, since it uses less digits than its factorization.

1252409854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64514.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 1252409854 is about 35389.4031314460. The cubic root of 1252409854 is about 1077.9091503736.

The spelling of 1252409854 in words is "one billion, two hundred fifty-two million, four hundred nine thousand, eight hundred fifty-four".