1310625157 has 2 divisors, whose sum is σ = 1310625158. Its totient is φ = 1310625156.

The previous prime is 1310625143. The next prime is 1310625179. The reversal of 1310625157 is 7515260131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1034201281 + 276423876 = 32159^2 + 16626^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310625157 - 2²³ = 1302236549 is a prime.

It is a super-2 number, since 2×1310625157² = 3435476604322549298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310628157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655312578 + 655312579.

It is an arithmetic number, because the mean of its divisors is an integer number (655312579).

Almost surely, 2^1310625157 is an apocalyptic number.

It is an amenable number.

1310625157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310625157 is an equidigital number, since it uses as much as digits as its factorization.

1310625157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 1310625157 is about 36202.5573267967. The cubic root of 1310625157 is about 1094.3582088743.

Adding to 1310625157 its reverse (7515260131), we get a palindrome (8825885288).

The spelling of 1310625157 in words is "one billion, three hundred ten million, six hundred twenty-five thousand, one hundred fifty-seven".