25042555 has 16 divisors (see below), whose sum is σ = 30935520. Its totient is φ = 19450368.

The previous prime is 25042543. The next prime is 25042571. The reversal of 25042555 is 55524052.

It is a cyclic number.

It is not a de Polignac number, because 25042555 - 2¹³ = 25034363 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57619 + ... + 58051.

It is an arithmetic number, because the mean of its divisors is an integer number (1933470).

Almost surely, 2^25042555 is an apocalyptic number.

25042555 is a deficient number, since it is larger than the sum of its proper divisors (5892965).

25042555 is a wasteful number, since it uses less digits than its factorization.

25042555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 25042555 is about 5004.2536906116. The cubic root of 25042555 is about 292.5675885400.

The spelling of 25042555 in words is "twenty-five million, forty-two thousand, five hundred fifty-five".