7565225137 has 4 divisors (see below), whose sum is σ = 7565565220. Its totient is φ = 7564885056.

The previous prime is 7565225123. The next prime is 7565225149. The reversal of 7565225137 is 7315225657.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7315225657 = 1697 ⋅4310681.

It can be written as a sum of positive squares in 2 ways, for example, as 5910688161 + 1654536976 = 76881^2 + 40676^2 .

It is a cyclic number.

It is not a de Polignac number, because 7565225137 - 2⁷ = 7565225009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7565225093 and 7565225102.

It is not an unprimeable number, because it can be changed into a prime (7565225177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134148 + ... + 182005.

It is an arithmetic number, because the mean of its divisors is an integer number (1891391305).

Almost surely, 2^7565225137 is an apocalyptic number.

It is an amenable number.

7565225137 is a deficient number, since it is larger than the sum of its proper divisors (340083).

7565225137 is a wasteful number, since it uses less digits than its factorization.

7565225137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340082.

The product of its digits is 441000, while the sum is 43.

The square root of 7565225137 is about 86978.3026794614. The cubic root of 7565225137 is about 1963.0918451985.

The spelling of 7565225137 in words is "seven billion, five hundred sixty-five million, two hundred twenty-five thousand, one hundred thirty-seven".