125225661 has 16 divisors (see below), whose sum is σ = 182366208. Its totient is φ = 75802800.

The previous prime is 125225537. The next prime is 125225663. The reversal of 125225661 is 166522521.

It is not a de Polignac number, because 125225661 - 2¹¹ = 125223613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125225663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34126 + ... + 37616.

It is an arithmetic number, because the mean of its divisors is an integer number (11397888).

Almost surely, 2^125225661 is an apocalyptic number.

125225661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125225661 is a deficient number, since it is larger than the sum of its proper divisors (57140547).

125225661 is a wasteful number, since it uses less digits than its factorization.

125225661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592.

The product of its digits is 7200, while the sum is 30.

The square root of 125225661 is about 11190.4272036415. The cubic root of 125225661 is about 500.3007004556.

The spelling of 125225661 in words is "one hundred twenty-five million, two hundred twenty-five thousand, six hundred sixty-one".