55725001543421 has 8 divisors (see below), whose sum is σ = 63723919851840. Its totient is φ = 47735634185568.

The previous prime is 55725001543361. The next prime is 55725001543459. The reversal of 55725001543421 is 12434510052755.

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

It is not a de Polignac number, because 55725001543421 - 2³⁴ = 55707821674237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55725001543021) 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, 2387725136 + ... + 2387748473.

It is an arithmetic number, because the mean of its divisors is an integer number (7965489981480).

Almost surely, 2^{55725001543421} is an apocalyptic number.

It is an amenable number.

55725001543421 is a deficient number, since it is larger than the sum of its proper divisors (7998918308419).

55725001543421 is a wasteful number, since it uses less digits than its factorization.

55725001543421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775475283.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 55725001543421 in words is "fifty-five trillion, seven hundred twenty-five billion, one million, five hundred forty-three thousand, four hundred twenty-one".