125241621 has 4 divisors (see below), whose sum is σ = 166988832. Its totient is φ = 83494412.

The previous prime is 125241619. The next prime is 125241631. The reversal of 125241621 is 126142521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125241621 - 2¹ = 125241619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125241591 and 125241600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125241631) 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, 20873601 + ... + 20873606.

It is an arithmetic number, because the mean of its divisors is an integer number (41747208).

Almost surely, 2^125241621 is an apocalyptic number.

It is an amenable number.

125241621 is a deficient number, since it is larger than the sum of its proper divisors (41747211).

125241621 is an equidigital number, since it uses as much as digits as its factorization.

125241621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41747210.

The product of its digits is 960, while the sum is 24.

The square root of 125241621 is about 11191.1402904262. The cubic root of 125241621 is about 500.3219539801.

The spelling of 125241621 in words is "one hundred twenty-five million, two hundred forty-one thousand, six hundred twenty-one".