1390025137 has 2 divisors, whose sum is σ = 1390025138. Its totient is φ = 1390025136.

The previous prime is 1390025101. The next prime is 1390025177. The reversal of 1390025137 is 7315200931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 898560576 + 491464561 = 29976^2 + 22169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390025137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1390025099 and 1390025108.

It is not a weakly prime, because it can be changed into another prime (1390025177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695012568 + 695012569.

It is an arithmetic number, because the mean of its divisors is an integer number (695012569).

Almost surely, 2^1390025137 is an apocalyptic number.

It is an amenable number.

1390025137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390025137 is an equidigital number, since it uses as much as digits as its factorization.

1390025137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1390025137 is about 37283.0408765165. The cubic root of 1390025137 is about 1116.0257573073.

The spelling of 1390025137 in words is "one billion, three hundred ninety million, twenty-five thousand, one hundred thirty-seven".