125563816 has 16 divisors (see below), whose sum is σ = 269065440. Its totient is φ = 53813040.

The previous prime is 125563807. The next prime is 125563817. The reversal of 125563816 is 618365521.

It is not an unprimeable number, because it can be changed into a prime (125563817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121050 + ... + 1121161.

It is an arithmetic number, because the mean of its divisors is an integer number (16816590).

Almost surely, 2^125563816 is an apocalyptic number.

It is an amenable number.

125563816 is an abundant number, since it is smaller than the sum of its proper divisors (143501624).

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

125563816 is a wasteful number, since it uses less digits than its factorization.

125563816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242224 (or 2242220 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 125563816 is about 11205.5261366881. The cubic root of 125563816 is about 500.7506272203.

The spelling of 125563816 in words is "one hundred twenty-five million, five hundred sixty-three thousand, eight hundred sixteen".