1371189725 has 6 divisors (see below), whose sum is σ = 1700275290. Its totient is φ = 1096951760.

The previous prime is 1371189683. The next prime is 1371189731. The reversal of 1371189725 is 5279811731.

It can be written as a sum of positive squares in 3 ways, for example, as 23639044 + 1347550681 = 4862^2 + 36709^2 .

It is not a de Polignac number, because 1371189725 - 2⁶ = 1371189661 is a prime.

It is a super-2 number, since 2×1371189725² = 3760322523891151250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27423770 + ... + 27423819.

It is an arithmetic number, because the mean of its divisors is an integer number (283379215).

Almost surely, 2^1371189725 is an apocalyptic number.

It is an amenable number.

1371189725 is a deficient number, since it is larger than the sum of its proper divisors (329085565).

1371189725 is an equidigital number, since it uses as much as digits as its factorization.

1371189725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54847599 (or 54847594 counting only the distinct ones).

The product of its digits is 105840, while the sum is 44.

The square root of 1371189725 is about 37029.5790551283. The cubic root of 1371189725 is about 1110.9619464666.

The spelling of 1371189725 in words is "one billion, three hundred seventy-one million, one hundred eighty-nine thousand, seven hundred twenty-five".