55042121425 has 12 divisors (see below), whose sum is σ = 68595212800. Its totient is φ = 43812418320.

The previous prime is 55042121359. The next prime is 55042121443. The reversal of 55042121425 is 52412124055.

It is not a de Polignac number, because 55042121425 - 2¹³ = 55042113233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5526897 + ... + 5536846.

Almost surely, 2^55042121425 is an apocalyptic number.

It is an amenable number.

55042121425 is a deficient number, since it is larger than the sum of its proper divisors (13553091375).

55042121425 is a wasteful number, since it uses less digits than its factorization.

55042121425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11063952 (or 11063947 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 55042121425 in words is "fifty-five billion, forty-two million, one hundred twenty-one thousand, four hundred twenty-five".