25725290 has 8 divisors (see below), whose sum is σ = 46305540. Its totient is φ = 10290112.

The previous prime is 25725289. The next prime is 25725307. The reversal of 25725290 is 9252752.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25090081 + 635209 = 5009^2 + 797^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286255 + ... + 1286274.

Almost surely, 2^25725290 is an apocalyptic number.

25725290 is a deficient number, since it is larger than the sum of its proper divisors (20580250).

25725290 is a wasteful number, since it uses less digits than its factorization.

25725290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572536.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 25725290 is about 5072.0104495160. The cubic root of 25725290 is about 295.2025421280.

The spelling of 25725290 in words is "twenty-five million, seven hundred twenty-five thousand, two hundred ninety".