25425117 has 8 divisors (see below), whose sum is σ = 37666880. Its totient is φ = 16950060.

The previous prime is 25425109. The next prime is 25425119. The reversal of 25425117 is 71152452.

25425117 is a `hidden beast` number, since 2 + 542 + 5 + 117 = 666.

It is not a de Polignac number, because 25425117 - 2³ = 25425109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 941671 = 25425117 / (2 + 5 + 4 + 2 + 5 + 1 + 1 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25425119) 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, 470809 + ... + 470862.

It is an arithmetic number, because the mean of its divisors is an integer number (4708360).

Almost surely, 2^25425117 is an apocalyptic number.

25425117 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

25425117 is a deficient number, since it is larger than the sum of its proper divisors (12241763).

25425117 is an equidigital number, since it uses as much as digits as its factorization.

25425117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941680 (or 941674 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 25425117 is about 5042.3324959784. The cubic root of 25425117 is about 294.0498665935.

Adding to 25425117 its reverse (71152452), we get a palindrome (96577569).

The spelling of 25425117 in words is "twenty-five million, four hundred twenty-five thousand, one hundred seventeen".