1244400625 has 40 divisors (see below), whose sum is σ = 1747690560. Its totient is φ = 878856000.

The previous prime is 1244400557. The next prime is 1244400659. The reversal of 1244400625 is 5260044421.

1244400625 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1244400625 - 2²⁷ = 1110182897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1244400593 and 1244400602.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 183546 + ... + 190204.

It is an arithmetic number, because the mean of its divisors is an integer number (43692264).

Almost surely, 2^1244400625 is an apocalyptic number.

It is an amenable number.

1244400625 is a deficient number, since it is larger than the sum of its proper divisors (503289935).

1244400625 is an equidigital number, since it uses as much as digits as its factorization.

1244400625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715 (or 6700 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1244400625 is about 35276.0630598144. The cubic root of 1244400625 is about 1075.6064722824.

The spelling of 1244400625 in words is "one billion, two hundred forty-four million, four hundred thousand, six hundred twenty-five".