125471977 has 4 divisors (see below), whose sum is σ = 125499780. Its totient is φ = 125444176.

The previous prime is 125471959. The next prime is 125472007. The reversal of 125471977 is 779174521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44903401 + 80568576 = 6701^2 + 8976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125471977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125471677) 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, 5398 + ... + 16735.

It is an arithmetic number, because the mean of its divisors is an integer number (31374945).

Almost surely, 2^125471977 is an apocalyptic number.

It is an amenable number.

125471977 is a deficient number, since it is larger than the sum of its proper divisors (27803).

125471977 is an equidigital number, since it uses as much as digits as its factorization.

125471977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27802.

The product of its digits is 123480, while the sum is 43.

The square root of 125471977 is about 11201.4274536775. The cubic root of 125471977 is about 500.6285122803.

The spelling of 125471977 in words is "one hundred twenty-five million, four hundred seventy-one thousand, nine hundred seventy-seven".