135725757 has 8 divisors (see below), whose sum is σ = 181067040. Its totient is φ = 90434160.

The previous prime is 135725749. The next prime is 135725767. The reversal of 135725757 is 757527531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135725757 - 2³ = 135725749 is a prime.

It is a super-2 number, since 2×135725757² = 36842962226446098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135725717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5494 + ... + 17367.

It is an arithmetic number, because the mean of its divisors is an integer number (22633380).

Almost surely, 2^135725757 is an apocalyptic number.

It is an amenable number.

135725757 is a deficient number, since it is larger than the sum of its proper divisors (45341283).

135725757 is a wasteful number, since it uses less digits than its factorization.

135725757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24843.

The product of its digits is 257250, while the sum is 42.

The square root of 135725757 is about 11650.1397845691. The cubic root of 135725757 is about 513.9104208328.

The spelling of 135725757 in words is "one hundred thirty-five million, seven hundred twenty-five thousand, seven hundred fifty-seven".