1390039025 has 24 divisors (see below), whose sum is σ = 1757476800. Its totient is φ = 1090324800.

The previous prime is 1390038989. The next prime is 1390039037. The reversal of 1390039025 is 5209300931.

It is not a de Polignac number, because 1390039025 - 2⁶ = 1390038961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1390038982 and 1390039000.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 546206 + ... + 548744.

It is an arithmetic number, because the mean of its divisors is an integer number (73228200).

Almost surely, 2^1390039025 is an apocalyptic number.

It is an amenable number.

1390039025 is a deficient number, since it is larger than the sum of its proper divisors (367437775).

1390039025 is a wasteful number, since it uses less digits than its factorization.

1390039025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969 (or 2964 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 1390039025 is about 37283.2271269535. The cubic root of 1390039025 is about 1116.0294741020.

Adding to 1390039025 its reverse (5209300931), we get a palindrome (6599339956).

It can be divided in two parts, 13900 and 39025, that added together give a palindrome (52925).

The spelling of 1390039025 in words is "one billion, three hundred ninety million, thirty-nine thousand, twenty-five".