125554121435 has 32 divisors (see below), whose sum is σ = 166791934080. Its totient is φ = 90246289408.

The previous prime is 125554121431. The next prime is 125554121443. The reversal of 125554121435 is 534121455521.

It is a cyclic number.

It is not a de Polignac number, because 125554121435 - 2² = 125554121431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125554121431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 932009 + ... + 1058181.

It is an arithmetic number, because the mean of its divisors is an integer number (5212247940).

Almost surely, 2^125554121435 is an apocalyptic number.

125554121435 is a deficient number, since it is larger than the sum of its proper divisors (41237812645).

125554121435 is a wasteful number, since it uses less digits than its factorization.

125554121435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126727.

The product of its digits is 120000, while the sum is 38.

Adding to 125554121435 its reverse (534121455521), we get a palindrome (659675576956).

The spelling of 125554121435 in words is "one hundred twenty-five billion, five hundred fifty-four million, one hundred twenty-one thousand, four hundred thirty-five".