1265656127253 has 32 divisors (see below), whose sum is σ = 1990580689920. Its totient is φ = 700362305280.

The previous prime is 1265656127251. The next prime is 1265656127273. The reversal of 1265656127253 is 3527216565621.

It is not a de Polignac number, because 1265656127253 - 2¹ = 1265656127251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1265656127196 and 1265656127205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265656127251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7540228 + ... + 7706253.

It is an arithmetic number, because the mean of its divisors is an integer number (62205646560).

Almost surely, 2^{1265656127253} is an apocalyptic number.

It is an amenable number.

1265656127253 is a deficient number, since it is larger than the sum of its proper divisors (724924562667).

1265656127253 is a wasteful number, since it uses less digits than its factorization.

1265656127253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15246617.

The product of its digits is 4536000, while the sum is 51.

The spelling of 1265656127253 in words is "one trillion, two hundred sixty-five billion, six hundred fifty-six million, one hundred twenty-seven thousand, two hundred fifty-three".