25242405 has 8 divisors (see below), whose sum is σ = 40387872. Its totient is φ = 13462608.

The previous prime is 25242389. The next prime is 25242439. The reversal of 25242405 is 50424252.

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 25242405 - 2⁴ = 25242389 is a prime.

It is a congruent 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, 841399 + ... + 841428.

It is an arithmetic number, because the mean of its divisors is an integer number (5048484).

Almost surely, 2^25242405 is an apocalyptic number.

It is an amenable number.

25242405 is a deficient number, since it is larger than the sum of its proper divisors (15145467).

25242405 is a wasteful number, since it uses less digits than its factorization.

25242405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682835.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 25242405 is about 5024.1820229765. The cubic root of 25242405 is about 293.3437976926.

Adding to 25242405 its reverse (50424252), we get a palindrome (75666657).

The spelling of 25242405 in words is "twenty-five million, two hundred forty-two thousand, four hundred five".