1256410372 has 48 divisors (see below), whose sum is σ = 2571520000. Its totient is φ = 536905152.

The previous prime is 1256410343. The next prime is 1256410417. The reversal of 1256410372 is 2730146521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560029 + ... + 562267.

Almost surely, 2^1256410372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1256410372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1285760000).

1256410372 is an abundant number, since it is smaller than the sum of its proper divisors (1315109628).

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

1256410372 is a wasteful number, since it uses less digits than its factorization.

1256410372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673 (or 2657 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1256410372 is about 35445.8794784387. The cubic root of 1256410372 is about 1079.0556365277.

Adding to 1256410372 its reverse (2730146521), we get a palindrome (3986556893).

The spelling of 1256410372 in words is "one billion, two hundred fifty-six million, four hundred ten thousand, three hundred seventy-two".