25204390 has 8 divisors (see below), whose sum is σ = 45367920. Its totient is φ = 10081752.

The previous prime is 25204379. The next prime is 25204391. The reversal of 25204390 is 9340252.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25204390² = 1270522550544200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25204391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1260210 + ... + 1260229.

It is an arithmetic number, because the mean of its divisors is an integer number (5670990).

Almost surely, 2^25204390 is an apocalyptic number.

25204390 is a deficient number, since it is larger than the sum of its proper divisors (20163530).

25204390 is a wasteful number, since it uses less digits than its factorization.

25204390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520446.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 25204390 is about 5020.3973946292. The cubic root of 25204390 is about 293.1964653606.

The spelling of 25204390 in words is "twenty-five million, two hundred four thousand, three hundred ninety".