1378307425 has 12 divisors (see below), whose sum is σ = 1864474416. Its totient is φ = 1002405200.

The previous prime is 1378307393. The next prime is 1378307429. The reversal of 1378307425 is 5247038731.

It is a happy number.

It is not a de Polignac number, because 1378307425 - 2⁵ = 1378307393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378307429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2505739 + ... + 2506288.

It is an arithmetic number, because the mean of its divisors is an integer number (155372868).

Almost surely, 2^1378307425 is an apocalyptic number.

It is an amenable number.

1378307425 is a deficient number, since it is larger than the sum of its proper divisors (486166991).

1378307425 is a wasteful number, since it uses less digits than its factorization.

1378307425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012048 (or 5012043 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 1378307425 is about 37125.5629586946. The cubic root of 1378307425 is about 1112.8809249770.

It can be divided in two parts, 1378 and 307425, that added together give a palindrome (308803).

The spelling of 1378307425 in words is "one billion, three hundred seventy-eight million, three hundred seven thousand, four hundred twenty-five".