125505534 has 32 divisors (see below), whose sum is σ = 312950016. Its totient is φ = 32598720.

The previous prime is 125505521. The next prime is 125505547. The reversal of 125505534 is 435505521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125505521) and next prime (125505547).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135367 + ... + 136290.

It is an arithmetic number, because the mean of its divisors is an integer number (9779688).

Almost surely, 2^125505534 is an apocalyptic number.

125505534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

125505534 is an abundant number, since it is smaller than the sum of its proper divisors (187444482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125505534 is a wasteful number, since it uses less digits than its factorization.

125505534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271680.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 125505534 is about 11202.9252429890. The cubic root of 125505534 is about 500.6731386952.

The spelling of 125505534 in words is "one hundred twenty-five million, five hundred five thousand, five hundred thirty-four".