25552155 has 16 divisors (see below), whose sum is σ = 41402880. Its totient is φ = 13454688.

The previous prime is 25552147. The next prime is 25552157. The reversal of 25552155 is 55125552.

It is not a de Polignac number, because 25552155 - 2³ = 25552147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25552157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9597 + ... + 11966.

It is an arithmetic number, because the mean of its divisors is an integer number (2587680).

Almost surely, 2^25552155 is an apocalyptic number.

25552155 is a deficient number, since it is larger than the sum of its proper divisors (15850725).

25552155 is a wasteful number, since it uses less digits than its factorization.

25552155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21650.

The product of its digits is 12500, while the sum is 30.

The square root of 25552155 is about 5054.9139458551. The cubic root of 25552155 is about 294.5387986313.

The spelling of 25552155 in words is "twenty-five million, five hundred fifty-two thousand, one hundred fifty-five".