25112555 has 24 divisors (see below), whose sum is σ = 33045408. Its totient is φ = 18310656.

The previous prime is 25112551. The next prime is 25112557. The reversal of 25112555 is 55521152.

It is not a de Polignac number, because 25112555 - 2² = 25112551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25112551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95354 + ... + 95616.

It is an arithmetic number, because the mean of its divisors is an integer number (1376892).

Almost surely, 2^25112555 is an apocalyptic number.

25112555 is a deficient number, since it is larger than the sum of its proper divisors (7932853).

25112555 is a wasteful number, since it uses less digits than its factorization.

25112555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 394 counting only the distinct ones).

The product of its digits is 2500, while the sum is 26.

The square root of 25112555 is about 5011.2428598103. The cubic root of 25112555 is about 292.8399340048.

It can be divided in two parts, 251 and 12555, that multiplied together give a triangular number (3151305 = T₂₅₁₀).

The spelling of 25112555 in words is "twenty-five million, one hundred twelve thousand, five hundred fifty-five".