125561670 has 64 divisors (see below), whose sum is σ = 326579904. Its totient is φ = 30712320.

The previous prime is 125561651. The next prime is 125561699. The reversal of 125561670 is 76165521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66540 + ... + 68400.

It is an arithmetic number, because the mean of its divisors is an integer number (5102811).

Almost surely, 2^125561670 is an apocalyptic number.

125561670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125561670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163289952).

125561670 is an abundant number, since it is smaller than the sum of its proper divisors (201018234).

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

125561670 is a wasteful number, since it uses less digits than its factorization.

125561670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 125561670 is about 11205.4303799542. The cubic root of 125561670 is about 500.7477744426.

The spelling of 125561670 in words is "one hundred twenty-five million, five hundred sixty-one thousand, six hundred seventy".