1438923625 has 8 divisors (see below), whose sum is σ = 1795776840. Its totient is φ = 1151138800.

The previous prime is 1438923587. The next prime is 1438923649. The reversal of 1438923625 is 5263298341.

It can be written as a sum of positive squares in 4 ways, for example, as 1907161 + 1437016464 = 1381^2 + 37908^2 .

It is not a de Polignac number, because 1438923625 - 2¹¹ = 1438921577 is a prime.

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, 5755570 + ... + 5755819.

It is an arithmetic number, because the mean of its divisors is an integer number (224472105).

Almost surely, 2^1438923625 is an apocalyptic number.

It is an amenable number.

1438923625 is a deficient number, since it is larger than the sum of its proper divisors (356853215).

1438923625 is an equidigital number, since it uses as much as digits as its factorization.

1438923625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11511404 (or 11511394 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 1438923625 is about 37933.1467848371. The cubic root of 1438923625 is about 1128.9618012857.

The spelling of 1438923625 in words is "one billion, four hundred thirty-eight million, nine hundred twenty-three thousand, six hundred twenty-five".