125654048977 has 4 divisors (see below), whose sum is σ = 126454393396. Its totient is φ = 124853704560.

The previous prime is 125654048959. The next prime is 125654048987. The reversal of 125654048977 is 779840456521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 779840456521 = 7 ⋅111405779503.

It can be written as a sum of positive squares in 2 ways, for example, as 31598973121 + 94055075856 = 177761^2 + 306684^2 .

It is a cyclic number.

It is not a de Polignac number, because 125654048977 - 2¹⁵ = 125654016209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125654048987) 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, 400171974 + ... + 400172287.

It is an arithmetic number, because the mean of its divisors is an integer number (31613598349).

Almost surely, 2^125654048977 is an apocalyptic number.

It is an amenable number.

125654048977 is a deficient number, since it is larger than the sum of its proper divisors (800344419).

125654048977 is an equidigital number, since it uses as much as digits as its factorization.

125654048977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800344418.

The product of its (nonzero) digits is 16934400, while the sum is 58.

The spelling of 125654048977 in words is "one hundred twenty-five billion, six hundred fifty-four million, forty-eight thousand, nine hundred seventy-seven".