125204412421 has 8 divisors (see below), whose sum is σ = 137279967264. Its totient is φ = 113244413520.

The previous prime is 125204412413. The next prime is 125204412427. The reversal of 125204412421 is 124214402521.

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 125204412421 - 2³ = 125204412413 is a prime.

It is a super-2 number, since 2×125204412421² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125204412421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125204412427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28886715 + ... + 28891048.

It is an arithmetic number, because the mean of its divisors is an integer number (17159995908).

Almost surely, 2^125204412421 is an apocalyptic number.

125204412421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125204412421 is a deficient number, since it is larger than the sum of its proper divisors (12075554843).

125204412421 is a wasteful number, since it uses less digits than its factorization.

125204412421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57777971.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 125204412421 its reverse (124214402521), we get a palindrome (249418814942).

The spelling of 125204412421 in words is "one hundred twenty-five billion, two hundred four million, four hundred twelve thousand, four hundred twenty-one".