1390125577 has 2 divisors, whose sum is σ = 1390125578. Its totient is φ = 1390125576.

The previous prime is 1390125563. The next prime is 1390125637. The reversal of 1390125577 is 7755210931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024704121 + 365421456 = 32011^2 + 19116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390125577 is a prime.

It is a super-3 number, since 3×1390125577³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1390122577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695062788 + 695062789.

It is an arithmetic number, because the mean of its divisors is an integer number (695062789).

Almost surely, 2^1390125577 is an apocalyptic number.

It is an amenable number.

1390125577 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390125577 is an equidigital number, since it uses as much as digits as its factorization.

1390125577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 1390125577 is about 37284.3878453167. The cubic root of 1390125577 is about 1116.0526371395.

The spelling of 1390125577 in words is "one billion, three hundred ninety million, one hundred twenty-five thousand, five hundred seventy-seven".