25145555 has 8 divisors (see below), whose sum is σ = 31486752. Its totient is φ = 19241728.

The previous prime is 25145543. The next prime is 25145599. The reversal of 25145555 is 55554152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25145555 - 2⁴ = 25145539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109214 + ... + 109443.

It is an arithmetic number, because the mean of its divisors is an integer number (3935844).

Almost surely, 2^25145555 is an apocalyptic number.

25145555 is a deficient number, since it is larger than the sum of its proper divisors (6341197).

25145555 is a wasteful number, since it uses less digits than its factorization.

25145555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218685.

The product of its digits is 25000, while the sum is 32.

The square root of 25145555 is about 5014.5343751938. The cubic root of 25145555 is about 292.9681499235.

The spelling of 25145555 in words is "twenty-five million, one hundred forty-five thousand, five hundred fifty-five".