125220804238409 has 8 divisors (see below), whose sum is σ = 136605558649728. Its totient is φ = 113836223982960.

The previous prime is 125220804238381. The next prime is 125220804238427. The reversal of 125220804238409 is 904832408022521.

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 125220804238409 - 2¹² = 125220804234313 is a prime.

It is a super-2 number, since 2×125220804238409² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125220804228409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42033302 + ... + 44913695.

It is an arithmetic number, because the mean of its divisors is an integer number (17075694831216).

Almost surely, 2^{125220804238409} is an apocalyptic number.

It is an amenable number.

125220804238409 is a deficient number, since it is larger than the sum of its proper divisors (11384754411319).

125220804238409 is a wasteful number, since it uses less digits than its factorization.

125220804238409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87077935.

The product of its (nonzero) digits is 2211840, while the sum is 50.

The spelling of 125220804238409 in words is "one hundred twenty-five trillion, two hundred twenty billion, eight hundred four million, two hundred thirty-eight thousand, four hundred nine".