25913990 has 16 divisors (see below), whose sum is σ = 46792080. Its totient is φ = 10332960.

The previous prime is 25913983. The next prime is 25913999. The reversal of 25913990 is 9931952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25913999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605 + ... + 7224.

It is an arithmetic number, because the mean of its divisors is an integer number (2924505).

Almost surely, 2^25913990 is an apocalyptic number.

25913990 is a deficient number, since it is larger than the sum of its proper divisors (20878090).

25913990 is a wasteful number, since it uses less digits than its factorization.

25913990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8167.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 25913990 is about 5090.5785525812. The cubic root of 25913990 is about 295.9225737958.

The spelling of 25913990 in words is "twenty-five million, nine hundred thirteen thousand, nine hundred ninety".