25111995 has 8 divisors (see below), whose sum is σ = 40179216. Its totient is φ = 13393056.

The previous prime is 25111987. The next prime is 25112027. The reversal of 25111995 is 59911152.

It is a happy number.

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

It is not a de Polignac number, because 25111995 - 2³ = 25111987 is a prime.

It is a super-2 number, since 2×25111995² = 1261224585760050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 837052 + ... + 837081.

It is an arithmetic number, because the mean of its divisors is an integer number (5022402).

Almost surely, 2^25111995 is an apocalyptic number.

25111995 is a deficient number, since it is larger than the sum of its proper divisors (15067221).

25111995 is a wasteful number, since it uses less digits than its factorization.

25111995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674141.

The product of its digits is 4050, while the sum is 33.

The square root of 25111995 is about 5011.1869851364. The cubic root of 25111995 is about 292.8377572506.

It can be divided in two parts, 25111 and 995, that added together give a triangular number (26106 = T₂₂₈).

The spelling of 25111995 in words is "twenty-five million, one hundred eleven thousand, nine hundred ninety-five".