125104550421 has 8 divisors (see below), whose sum is σ = 168336398560. Its totient is φ = 82637867952.

The previous prime is 125104550419. The next prime is 125104550423. The reversal of 125104550421 is 124055401521.

It is an interprime number because it is at equal distance from previous prime (125104550419) and next prime (125104550423).

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

It is not a de Polignac number, because 125104550421 - 2¹ = 125104550419 is a prime.

It is a super-2 number, since 2×125104550421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125104550423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191291035 + ... + 191291688.

It is an arithmetic number, because the mean of its divisors is an integer number (21042049820).

Almost surely, 2^125104550421 is an apocalyptic number.

It is an amenable number.

125104550421 is a deficient number, since it is larger than the sum of its proper divisors (43231848139).

125104550421 is a wasteful number, since it uses less digits than its factorization.

125104550421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382582835.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 125104550421 its reverse (124055401521), we get a palindrome (249159951942).

The spelling of 125104550421 in words is "one hundred twenty-five billion, one hundred four million, five hundred fifty thousand, four hundred twenty-one".