25009402 has 16 divisors (see below), whose sum is σ = 41877792. Its totient is φ = 11103120.

The previous prime is 25009393. The next prime is 25009403. The reversal of 25009402 is 20490052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (25009403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12273 + ... + 14164.

It is an arithmetic number, because the mean of its divisors is an integer number (2617362).

Almost surely, 2^25009402 is an apocalyptic number.

25009402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25009402 is a deficient number, since it is larger than the sum of its proper divisors (16868390).

25009402 is a wasteful number, since it uses less digits than its factorization.

25009402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26493.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 25009402 is about 5000.9401116190. The cubic root of 25009402 is about 292.4384247135.

Adding to 25009402 its reverse (20490052), we get a palindrome (45499454).

The spelling of 25009402 in words is "twenty-five million, nine thousand, four hundred two".