125185661 has 8 divisors (see below), whose sum is σ = 131920800. Its totient is φ = 118465200.

The previous prime is 125185649. The next prime is 125185673. The reversal of 125185661 is 166581521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125185649) and next prime (125185673).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125185661 - 2¹⁰ = 125184637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125185601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16835 + ... + 23103.

It is an arithmetic number, because the mean of its divisors is an integer number (16490100).

Almost surely, 2^125185661 is an apocalyptic number.

It is an amenable number.

125185661 is a deficient number, since it is larger than the sum of its proper divisors (6735139).

125185661 is a wasteful number, since it uses less digits than its factorization.

125185661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7339.

The product of its digits is 14400, while the sum is 35.

The square root of 125185661 is about 11188.6398190307. The cubic root of 125185661 is about 500.2474255410.

The spelling of 125185661 in words is "one hundred twenty-five million, one hundred eighty-five thousand, six hundred sixty-one".