135877255725 has 24 divisors (see below), whose sum is σ = 224822440800. Its totient is φ = 72412371520.

The previous prime is 135877255691. The next prime is 135877255741. The reversal of 135877255725 is 527552778531.

It is a happy number.

It is not a de Polignac number, because 135877255725 - 2¹⁰ = 135877254701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 595050 + ... + 791099.

It is an arithmetic number, because the mean of its divisors is an integer number (9367601700).

Almost surely, 2^135877255725 is an apocalyptic number.

135877255725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135877255725 is a deficient number, since it is larger than the sum of its proper divisors (88945185075).

135877255725 is a wasteful number, since it uses less digits than its factorization.

135877255725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387469 (or 1387464 counting only the distinct ones).

The product of its digits is 20580000, while the sum is 57.

The spelling of 135877255725 in words is "one hundred thirty-five billion, eight hundred seventy-seven million, two hundred fifty-five thousand, seven hundred twenty-five".