125566623 has 48 divisors (see below), whose sum is σ = 225039360. Its totient is φ = 65696832.

The previous prime is 125566601. The next prime is 125566631. The reversal of 125566623 is 326665521.

It is a happy number.

It is not a de Polignac number, because 125566623 - 2⁸ = 125566367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125566663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113290 + ... + 114392.

It is an arithmetic number, because the mean of its divisors is an integer number (4688320).

Almost surely, 2^125566623 is an apocalyptic number.

125566623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

125566623 is a deficient number, since it is larger than the sum of its proper divisors (99472737).

125566623 is a wasteful number, since it uses less digits than its factorization.

125566623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1265 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 125566623 is about 11205.6513866888. The cubic root of 125566623 is about 500.7543586470.

The spelling of 125566623 in words is "one hundred twenty-five million, five hundred sixty-six thousand, six hundred twenty-three".