1265475137 has 2 divisors, whose sum is σ = 1265475138. Its totient is φ = 1265475136.

The previous prime is 1265475131. The next prime is 1265475143. The reversal of 1265475137 is 7315745621.

It is a balanced prime because it is at equal distance from previous prime (1265475131) and next prime (1265475143).

It can be written as a sum of positive squares in only one way, i.e., 642673201 + 622801936 = 25351^2 + 24956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265475137 - 2¹⁰ = 1265474113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1265475094 and 1265475103.

It is not a weakly prime, because it can be changed into another prime (1265475131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632737568 + 632737569.

It is an arithmetic number, because the mean of its divisors is an integer number (632737569).

Almost surely, 2^1265475137 is an apocalyptic number.

It is an amenable number.

1265475137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265475137 is an equidigital number, since it uses as much as digits as its factorization.

1265475137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 41.

The square root of 1265475137 is about 35573.5173549088. The cubic root of 1265475137 is about 1081.6444817545.

The spelling of 1265475137 in words is "one billion, two hundred sixty-five million, four hundred seventy-five thousand, one hundred thirty-seven".