25253554555 has 16 divisors (see below), whose sum is σ = 31270022784. Its totient is φ = 19566200320.

The previous prime is 25253554541. The next prime is 25253554567. The reversal of 25253554555 is 55545535252.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-25253554555 is a prime.

It is a super-2 number, since 2×25253554555² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421507 + ... + 477676.

It is an arithmetic number, because the mean of its divisors is an integer number (1954376424).

Almost surely, 2^25253554555 is an apocalyptic number.

25253554555 is a deficient number, since it is larger than the sum of its proper divisors (6016468229).

25253554555 is a wasteful number, since it uses less digits than its factorization.

25253554555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899366.

The product of its digits is 3750000, while the sum is 46.

The spelling of 25253554555 in words is "twenty-five billion, two hundred fifty-three million, five hundred fifty-four thousand, five hundred fifty-five".