25418985 has 8 divisors (see below), whose sum is σ = 40670400. Its totient is φ = 13556784.

The previous prime is 25418983. The next prime is 25419001. The reversal of 25418985 is 58981452.

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 25418985 - 2¹ = 25418983 is a prime.

It is a super-2 number, since 2×25418985² = 1292249596860450, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (25418983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847285 + ... + 847314.

It is an arithmetic number, because the mean of its divisors is an integer number (5083800).

Almost surely, 2^25418985 is an apocalyptic number.

It is an amenable number.

25418985 is a deficient number, since it is larger than the sum of its proper divisors (15251415).

25418985 is a wasteful number, since it uses less digits than its factorization.

25418985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694607.

The product of its digits is 115200, while the sum is 42.

The square root of 25418985 is about 5041.7244073829. The cubic root of 25418985 is about 294.0262251584.

The spelling of 25418985 in words is "twenty-five million, four hundred eighteen thousand, nine hundred eighty-five".