125161025265 has 12 divisors (see below), whose sum is σ = 216945777204. Its totient is φ = 66752546784.

The previous prime is 125161025263. The next prime is 125161025279. The reversal of 125161025265 is 562520161521.

125161025265 is a `hidden beast` number, since 1 + 25 + 1 + 6 + 102 + 526 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 71340273216 + 53820752049 = 267096^2 + 231993^2 .

It is not a de Polignac number, because 125161025265 - 2¹ = 125161025263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125161025263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1390678014 + ... + 1390678103.

It is an arithmetic number, because the mean of its divisors is an integer number (18078814767).

Almost surely, 2^125161025265 is an apocalyptic number.

125161025265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125161025265 is a deficient number, since it is larger than the sum of its proper divisors (91784751939).

125161025265 is a wasteful number, since it uses less digits than its factorization.

125161025265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781356128 (or 2781356125 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

Adding to 125161025265 its reverse (562520161521), we get a palindrome (687681186786).

The spelling of 125161025265 in words is "one hundred twenty-five billion, one hundred sixty-one million, twenty-five thousand, two hundred sixty-five".