25949320 has 32 divisors (see below), whose sum is σ = 58912920. Its totient is φ = 10286080.

The previous prime is 25949317. The next prime is 25949323. The reversal of 25949320 is 2394952.

It is an interprime number because it is at equal distance from previous prime (25949317) and next prime (25949323).

It can be written as a sum of positive squares in 4 ways, for example, as 12859396 + 13089924 = 3586^2 + 3618^2 .

It is not an unprimeable number, because it can be changed into a prime (25949323) 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, 1650 + ... + 7390.

Almost surely, 2^25949320 is an apocalyptic number.

25949320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25949320 is an abundant number, since it is smaller than the sum of its proper divisors (32963600).

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

25949320 is a wasteful number, since it uses less digits than its factorization.

25949320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5865 (or 5861 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 25949320 is about 5094.0475066493. The cubic root of 25949320 is about 296.0569953554.

The spelling of 25949320 in words is "twenty-five million, nine hundred forty-nine thousand, three hundred twenty".