1394989625 has 16 divisors (see below), whose sum is σ = 1750593936. Its totient is φ = 1109808000.

The previous prime is 1394989619. The next prime is 1394989637. The reversal of 1394989625 is 5269894931.

It can be written as a sum of positive squares in 8 ways, for example, as 922883641 + 472105984 = 30379^2 + 21728^2 .

It is not a de Polignac number, because 1394989625 - 2⁸ = 1394989369 is a prime.

It is a Duffinian number.

It is a Curzon 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, 8204 + ... + 53453.

It is an arithmetic number, because the mean of its divisors is an integer number (109412121).

Almost surely, 2^1394989625 is an apocalyptic number.

It is an amenable number.

1394989625 is a deficient number, since it is larger than the sum of its proper divisors (355604311).

1394989625 is an equidigital number, since it uses as much as digits as its factorization.

1394989625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61853 (or 61843 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 56.

The square root of 1394989625 is about 37349.5599036990. The cubic root of 1394989625 is about 1117.3528109004.

The spelling of 1394989625 in words is "one billion, three hundred ninety-four million, nine hundred eighty-nine thousand, six hundred twenty-five".