55252503225 has 72 divisors (see below), whose sum is σ = 102349877760. Its totient is φ = 28475516160.

The previous prime is 55252503223. The next prime is 55252503277. The reversal of 55252503225 is 52230525255.

55252503225 is a `hidden beast` number, since 552 + 5 + 2 + 50 + 32 + 25 = 666.

It is not a de Polignac number, because 55252503225 - 2¹ = 55252503223 is a prime.

It is a super-2 number, since 2×55252503225² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55252503225.

It is not an unprimeable number, because it can be changed into a prime (55252503223) 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, 802357 + ... + 868493.

It is an arithmetic number, because the mean of its divisors is an integer number (1421526080).

Almost surely, 2^55252503225 is an apocalyptic number.

It is an amenable number.

55252503225 is a deficient number, since it is larger than the sum of its proper divisors (47097374535).

55252503225 is a wasteful number, since it uses less digits than its factorization.

55252503225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66279 (or 66271 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 36.

The spelling of 55252503225 in words is "fifty-five billion, two hundred fifty-two million, five hundred three thousand, two hundred twenty-five".