136525631 has 12 divisors (see below), whose sum is σ = 156593136. Its totient is φ = 118715520.

The previous prime is 136525601. The next prime is 136525637.

136525631 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-136525631 is a prime.

It is a super-2 number, since 2×136525631² = 37278495839896322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136525637) 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, 21746 + ... + 27311.

It is an arithmetic number, because the mean of its divisors is an integer number (13049428).

Almost surely, 2^136525631 is an apocalyptic number.

136525631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136525631 is a deficient number, since it is larger than the sum of its proper divisors (20067505).

136525631 is a wasteful number, since it uses less digits than its factorization.

136525631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49102 (or 49091 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

The square root of 136525631 is about 11684.4182995988. The cubic root of 136525631 is about 514.9179886374.

The spelling of 136525631 in words is "one hundred thirty-six million, five hundred twenty-five thousand, six hundred thirty-one".