1370320725 has 24 divisors (see below), whose sum is σ = 2304004320. Its totient is φ = 718448320.

The previous prime is 1370320709. The next prime is 1370320733. The reversal of 1370320725 is 5270230731.

It is not a de Polignac number, because 1370320725 - 2⁴ = 1370320709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1370320692 and 1370320701.

It is a congruent number.

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, 150414 + ... + 159263.

It is an arithmetic number, because the mean of its divisors is an integer number (96000180).

Almost surely, 2^1370320725 is an apocalyptic number.

1370320725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1370320725 is a deficient number, since it is larger than the sum of its proper divisors (933683595).

1370320725 is a wasteful number, since it uses less digits than its factorization.

1370320725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309749 (or 309744 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 1370320725 is about 37017.8433326416. The cubic root of 1370320725 is about 1110.7272038597.

The spelling of 1370320725 in words is "one billion, three hundred seventy million, three hundred twenty thousand, seven hundred twenty-five".