55501425 has 72 divisors (see below), whose sum is σ = 114903360. Its totient is φ = 25084800.

The previous prime is 55501423. The next prime is 55501427. The reversal of 55501425 is 52410555.

It is an interprime number because it is at equal distance from previous prime (55501423) and next prime (55501427).

It is not a de Polignac number, because 55501425 - 2¹ = 55501423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55501421) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 206191 + ... + 206459.

It is an arithmetic number, because the mean of its divisors is an integer number (1595880).

Almost surely, 2^55501425 is an apocalyptic number.

It is an amenable number.

55501425 is an abundant number, since it is smaller than the sum of its proper divisors (59401935).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55501425 is a wasteful number, since it uses less digits than its factorization.

55501425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 55501425 is about 7449.9278519996. The cubic root of 55501425 is about 381.4474458771.

The spelling of 55501425 in words is "fifty-five million, five hundred one thousand, four hundred twenty-five".