25042166 has 4 divisors (see below), whose sum is σ = 37563252. Its totient is φ = 12521082.

The previous prime is 25042159. The next prime is 25042169. The reversal of 25042166 is 66124052.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×25042166² = 1254220155943112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25042169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260540 + ... + 6260543.

It is an arithmetic number, because the mean of its divisors is an integer number (9390813).

Almost surely, 2^25042166 is an apocalyptic number.

25042166 is a deficient number, since it is larger than the sum of its proper divisors (12521086).

25042166 is a wasteful number, since it uses less digits than its factorization.

25042166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12521085.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 25042166 is about 5004.2148235263. The cubic root of 25042166 is about 292.5660736603.

The spelling of 25042166 in words is "twenty-five million, forty-two thousand, one hundred sixty-six".