25535290 has 32 divisors (see below), whose sum is σ = 52327296. Its totient is φ = 8880960.

The previous prime is 25535287. The next prime is 25535303. The reversal of 25535290 is 9253552.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2517 + ... + 7576.

It is an arithmetic number, because the mean of its divisors is an integer number (1635228).

Almost surely, 2^25535290 is an apocalyptic number.

25535290 is an abundant number, since it is smaller than the sum of its proper divisors (26792006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25535290 is a wasteful number, since it uses less digits than its factorization.

25535290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10134.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 25535290 is about 5053.2454917607. The cubic root of 25535290 is about 294.4739836140.

The spelling of 25535290 in words is "twenty-five million, five hundred thirty-five thousand, two hundred ninety".